Monthly Weather Review Western Australia September 2010 · This means a significant fraction of the rain may have occurred on the previous calendar day. Monthly rainfall is for the

Monthly Weather Review

Western Australia

September 2010

The Monthly Weather Review - Western Australia is produced twelve times each year by the Australian Bureau of Meteorology'sWestern Australia Climate Services Centre.

It is intended to provide a concise but informative overview of the temperatures, rainfall and significant weather events in WesternAustralia for the month.

To keep the Monthly Weather Review as timely as possible, much of the information is based on electronic reports. Although everyeffort is made to ensure the accuracy of these reports, the results can be considered only preliminary until complete quality controlprocedures have been carried out. Major discrepancies will be noted in later issues.

We are keen to ensure that the Monthly Weather Review is appropriate to the needs of its readers. If you have any comments orsuggestions, please do not hesitate to contact us:

By mail

Western Australia Climate Services CentreBureau of MeteorologyPO Box 1370West Perth WA 6872AUSTRALIA

By telephone

(08) 9263 2222

By email

[email protected]

You may also wish to visit the Bureau's home page, http://www.bom.gov.au.

Units of measurementExcept where noted, temperature is given in degrees Celsius (°C), rainfall in millimetres (mm), and wind speed in kilometres per hour(km/h).

Observation times and periodsEach station in Western Australia makes its main observation for the day at 9 am local time. At this time, the precipitation over thepast 24 hours is determined, and maximum and minimum thermometers are also read and reset. In this publication, the followingconventions are used for assigning dates to the observations made:

Maximum temperatures are for the 24 hours from 9 am on the date mentioned. They normally occur in the afternoon of that day.

Minimum temperatures are for the 24 hours to 9 am on the date mentioned. They normally occur in the early morning of that day.

Daily rainfall is for the 24 hours to 9 am on the date mentioned. This means a significant fraction of the rain may have occurred onthe previous calendar day.

Monthly rainfall is for the period from 9 am on the last day of the previous month to 9 am on the last day of this month.

Maximum daily wind gusts are in the 24 hours from midnight to midnight.

Climatological valuesThe climatological averages shown in the text and tables are generally long-term means based on observations from the years 1961to 1990. They are not shown for sites with less than 30 years of record in that time, as they cannot then be calculated reliably.Climatological extremes are generally taken from available observations from all available years of record. The number of years canvary substantially from site to site.

Copyright© Commonwealth of Australia 2010This work is copyright. You may download, display, print and reproduce this material in unaltered form only (retaining this notice) foryour personal, non-commercial use or use within your organisation. Apart from any use as permitted under the Copyright Act 1968,all other rights are reserved. Requests and inquiries concerning reproduction and rights should be addressed to CommonwealthCopyright Administration, Attorney General’s Department, Robert Garran Offices, National Circuit, Barton ACT 2600 or posted athttp://www.ag.gov.au/cca.

Product code IDCKGC11R1. Prepared on 15 November 2010. ISSN 1836-3032

Cover photographVirga from altocumulus clouds near Perth Airport, WA.Photograph by Michelle Dal Pozzo, 23 October 2009. Used with permission.If you have a photo you think would make a good cover for the Monthly Weather Review, please contact us at the address above.

Monthly Weather Review Western Australia September 2010

mailto:[email protected]://www.bom.gov.auhttp://www.ag.gov.au/cca

Overview• Monthly rainfall very much above average - 3rd

wettest September for WA, but 4th driest forsouthwest WA on record.

• Mean daily maximum temperature very muchbelow average - 7th lowest September on record.

• Mean daily minimum temperature near averagefor WA, but below average in southwest WA.

Averaged over WA as a whole, September 2010 wasthe 3rd wettest on record (comparable recordsbegan in 1900), however, much of this rainfall wasoutside Southwest WA (southwest of a line fromJurien Bay to Bremer Bay), which saw a continuationof the very dry year with September 2010 ranking as4th driest on record. Wettest September recordswere broken at sites in the Pilbara, Interior and Euclaas unseasonal rainfall continued in northern andeastern parts of the state; while driest Septemberrecords were broken at many locations in theSouthwest Land Division (SWLD).

Maximum temperatures followed a similar patternto the rainfall, with persistent cloud over central andeastern parts creating cooler than normal conditionswith record low mean maxima reported in theInterior; while in the north and west Kimberley, andnear the west coast, above to very much aboveaverage daytime temperatures were observed.Record high mean maxima were recorded mainlynear the SWLD west coast. Minimum temperatureswere well below average in the southwest of thestate with many clear nights, and record low meanminima in the Great Southern and Southeast Coastal,while the north and northwest saw above averageovernight temperatures, and record high meanminimum temperatures near parts of the Kimberleycoast.

Extremes in September 2010

Hottest day(Highest daily maximum temperature)42.7 °C at West Roebuck on the 28th

Warmest days on average(Highest mean daily maximum temperature)

37.8 °C at Wyndham AeroCoolest days on average

(Lowest mean daily maximum temperature)17.2 °C at Albany

Coldest day(Lowest daily maximum temperature)

10.9 °C at Kalgoorlie-Boulder Airport on the 1stColdest night

(Lowest daily minimum temperature)−3.2 °C at Eyre on the 11thCoolest nights on average

(Lowest mean daily minimum temperature)2.2 °C at Newdegate Research Station

Warmest nights on average(Highest mean daily minimum temperature)

26.4 °C at Troughton Island25.2 °C at Wyndham (WA mainland)

Warmest night(Highest daily minimum temperature)

29.4 °C at Wyndham on the 25thWettest overall

(Highest total rainfall)160.2 mm at Eucla

Wettest day(Highest daily rainfall)

68.2 mm at Old Mornington Homestead on the 8thHighest wind gust

104 km/h at Cape Leeuwin on the 8th

Significant weatherThere was no significant weather recorded in WA inSeptember 2010


page 1

Synoptic summarySeptember 2010 in WA began with a ridge of highpressure developing south of the state while a broadlow pressure trough extended from the Pilbara tothe Eucla. A cloudband over the southern Gascoyne,Goldfields, northeastern parts of the SWLD, Euclaand southern Interior associated with a strongmiddle level trough produced areas of rain withsome moderate falls, as well as isolatedthunderstorms in the southern half of the Interior,northern Goldfields and east Gascoyne. Isolatedshowers occurred in the remainder of the SWLD. Thecloudband and a developing middle level low overthe southern half of WA moved slowly eastwards onthe 2nd as the ridge to the south of the statestrengthened. Areas of rain and drizzle continued inthe Goldfields and Eucla, along with thethunderstorms in the Interior, while a cool southerlyairstream brought isolated showers to most of theSWLD and southeast Gascoyne. Isolated showerswere also observed in the Kimberley. The middlelevel low and cloudband cleared to the east of WAon the 3rd as showers and storms cleared theInterior, areas of rain, with some heavy falls, clearedthe Eucla, and isolated showers in the Goldfields andSWLD became confined to SWLD coastal parts. Lightshowers persisted over the northeast Kimberley. Aweak cold front moved through southern WAdistricts on the 4th as a ridge was maintained oversouthern WA. Isolated showers were reported in theLower West, Great Southern, far southern Goldfieldsand south coast districts. A high pressure systemdrifted eastwards over southern parts of WA on the5th, with isolated showers reported in south coastdistricts.

A trough developed over the Kimberley and Pilbaraand extended along the west coast on the 6th as ahigh in the Bight moved over southeast Australia.Isolated showers and thunderstorms were reportedin the Kimberley, Interior and far east Pilbara; whileisolated showers continued in the Southwest districtas a cold front approached the west coast. The coldfront crossed the SWLD on the 7th causing showersover much of the SWLD and west Gascoyne, andisolated thunderstorms were observed in theSouthwest district. The broad trough moved overcentral parts of WA causing isolated showers andthunderstorms in the Kimberley and Interior. On the8th, the cold front over the SWLD weakened andslipped to the southeast and a secondary frontmoved over the SWLD south coast districts late inthe evening. The inland trough contracted eastwardto the Kimberley and Interior and a cloudbanddeveloped over the Pilbara and west Kimberley.Isolated showers and thunderstorms in the northwere mainly confined to the eastern Interior andsoutheast Kimberley, while isolated showers wereobserved over much of the SWLD and western andsouthern parts of the Gascoyne. A very strong windgust was reported in the Southwest district in the

afternoon as a result of the secondary front. Thiscold front moved eastwards along the south coastand out of WA on the 9th as a ridge developed alongthe south coast in its wake. Isolated showersoccurred in the SWLD, southern Goldfields and Eucla.A weak cloud band extended over the Pilbara andinto the northern Interior and southern Kimberley,causing patchy rain, while showers andthunderstorms continued in the southeast Kimberleyand northeast Interior. A weak high developed in theBight on the 10th as isolated morning showers werereported in the Eucla. In the north, the cloudbandthickened later in the day as rain occurred in thePilbara, northeast Gascoyne, and central Interior.

A broad area of low pressure developed over WA onthe 11th, with an extensive cloudband over thePilbara, northeast Gascoyne and Interior causingareas of rain. Thunderstorms occurred in thenorthern Interior, whilst isolated showers andthunderstorms were observed in the northwestKimberley. A cold front moved over the Southwestdistrict late on the 11th, with generally light showersreported in the Southwest and Lower West as aresult. The front tracked eastwards through theSWLD, southern Gascoyne, Goldfields, and into theEucla on the 12th, with showers reported in theseregions. Isolated thunderstorms were also reportedwith the passage of the front near the south coast. Inthe north, the cloudband rapidly dissipated withisolated showers in the Pilbara and Interior clearing,whilst thunderstorms in the far east Interior clearedeast out of WA during the morning. Isolated showerswere reported in the Kimberley. On the 13th, thefront exited the state to the east and a ridge pushedalong the south coast causing a few showers in southcoast districts. Isolated showers and thunderstormscontinued in the Kimberley, and a cloudband beganto develop over the Pilbara. The cloudbandexpanded over northern and eastern WA on the14th, with areas of rain in the Pilbara, northeastGascoyne and northern Interior, and isolatedshowers and storms in the Kimberley, northernPilbara, and northern Interior. In the south, a fewshowers were reported in southern coastal parts as aridge remained near the south coast. A strong highto the south of the state cradled a trough along thewest coast on the 15th, while the cloudband over thenorth moved slowly eastwards, contracting to theeast Pilbara, Interior and Kimberley late in the day.Isolated showers and thunderstorms were observedin the Kimberley and northeast Interior, while areasof rain were mainly confined to the south Kimberley,Pilbara and northern Interior. Isolated showers werereported in southern coastal areas.

The strong high to the south of WA moved slowlyeastwards on the 16th, while weak troughs lay alongthe west coast and over the Interior. In the south,cool southerly air caused isolated showers anddrizzle along the south coast, extending into thesouthern Goldfields and inland Eucla in the


page 2

afternoon. The cloudband in the far east Pilbara,north and east Interior and southwest Kimberleycontracted northeast into the northeast Kimberleyduring the day, with areas of rain over these parts aswell as isolated thunderstorms. The 17th saw thestrong high remain south of WA, where it continuedas the dominant synoptic feature through to the23rd. The cloudband cleared the northwestKimberley in the morning on the 17th and areas oflight rain were reported in the Kimberley, Interior,Goldfields, Eucla, and the South and SoutheastCoastal districts as cloud persisted in these regions.Cloudy conditions remained over much of theeastern half of WA on the 18th, with a few showersin the Eucla and eastern Interior as the strong high tothe south directed cool winds over the area. Showerspersisted mainly in the Eucla district on the 19th and20th in an onshore flow, whilst the remainder of WAsaw generally clear conditions apart from some highlevel cloud.

The strong high moved slowly into the Bight from the21st through to the 23rd and continued itsdominance of WA weather with only isolatedshowers reported in mainly coastal parts of the Eucladuring this period. Middle level cloud extended overthe Kimberley and northern Interior on theafternoon of the 22nd and into the 23rd, however noweather was reported with this feature. The high inthe Bight moved over southeast Australia on the24th as a weak front moved across the westernsouth coast bringing isolated showers to southernparts of the Southwest and South Coastal districts.Isolated showers were reported in the Kimberley onthe 24th as the cloudband dissipated over theregion. A weak ridge lay along the south coast on the25th as mostly clear and sunny conditions werereported throughout WA.

A weak front brushed the SWLD south coast on the26th, causing isolated showers in southern coastaldistricts. In the north, afternoon showers and stormswere reported in the north Kimberley. A strong highmoved to the south of WA on the 27th as a ridge layalong the south coast in the wake of the frontcausing isolated showers and drizzle in south coastdistricts, as well as in adjacent parts of neighbouringdistricts. Isolated afternoon and evening showersand thunderstorms developed in the far northernKimberley as a trough developed over the area.

On the 28th, the strong high moved south of theBight as a trough extended from the Kimberley alongthe Pilbara coast. Showers and thunderstormscontinued in the far north Kimberley. The strong highmoved eastwards into the eastern Bight on the 29thas a trough developed along the west coast anddeepened. Isolated morning showers occurred in theEucla in the onshore flow. Middle level cloudextended over the SWLD and adjacent parts ofneighbouring districts, though no precipitation wasreported as a result. In the north, isolated showersand thunderstorms were confined to the far north

Kimberley. On the 30th, the trough near the westcoast broadened and moved over central parts ofWA with middle level cloud and isolated showersextending over the SWLD, Gascoyne, Goldfields andEucla. Isolated thunderstorms continued near the farnorth Kimberley coast.


page 3

Daily mean sea level pressure analyses1 September 2010 2 September 2010 3 September 2010

4 September 2010 5 September 2010 6 September 2010






page 4






page 5

TemperaturesMean temperatures (average of maximum andminimum temperature) for September 2010 wereabove to very much above average in the north andwest Kimberley, and above average in the westPilbara, west Gascoyne and parts of the westernSWLD. In contrast, much of the remainder of WA wasbelow to very much below average, with centraleastern WA up to 3 °C below normal. Whenaveraged across the state, the mean temperature forSeptember 2010 was 19.0 °C, which is 0.7 °C belowthe long-term average.

New temperature records

Record highest September daily maximum temperature

New record Old recordYears

ofrecord

Geraldton Airport 36.1 on the 29th 35.5 on the 26th in 1961 69Cape Naturaliste 27.3 on the 30th 24.7 on the 26th in 1961 54Onslow Airport 39.8 on the 27th 39.1 on the 5th in 1944 45Jurien Bay 34.2 on the 29th 32.8 on the 14th in 1987 41Gascoyne Junction 39.6 on the 28th 38.4 on the 29th in 1990 39Eneabba 34.7 on the 29th 34.5 on the 20th in 1994 37Learmonth Airport 41.3 on the 28th 38.9 on the 27th in 1980 36

Record highest September mean maximum temperature


ofrecord

Cape Naturaliste 19.1 19.0 in 2006 107Dwellingup 19.6 19.5 in 1987 73Karnet 19.5 19.3 in 1994 44Lancelin 23.1 22.4 in 1974 43Jurien Bay 23.7 23.3 in 1974 41Pingelly 20.2 19.6 in 2006 39

Record lowest September daily maximum temperature


ofrecord

Port Hedland Airport 21.4 on the 15th 24.4 on the 1st in 1993 63Meekatharra Airport 13.3 on the 2nd 13.7 on the 30th in 2009 61Wittenoom 16.2 on the 14th 16.7 on the 16th in 1958 58Telfer Aero 18.4 on the 15th 20.3 on the 22nd in 1974 37

Record lowest September mean maximum temperature


ofrecord

Warburton Airfield 23.0 24.0 in 1978 37Balgo Hills 30.2 31.1 in 1956 32

Record lowest September mean minimum temperature


ofrecord

Katanning Comparison 4.0 4.4 in 1969 116Salmon Gums Res.Stn. 2.3 2.9 in 1956 72Wagin 4.3 4.5 in 1975 36

Record highest September daily minimum temperature


ofrecord

Geraldton Airport 19.1 on the 30th 18.0 on the 15th in 1996 69Perth Airport 19.2 on the 30th 17.2 on the 28th in 1998 67Carnarvon Airport 20.8 on the 29th 20.5 on the 22nd in 1988 65Wongan HillsRes.Station 16.5 on the 30th 16.1 on the 21st in 1954 59

DalwallinuComparison 16.4 on the 30th 15.6 on the 30th in 1967 55

Pearce RAAF 19.1 on the 30th 19.0 on the 20th in 1985 53Bencubbin 17.5 on the 30th 16.1 on the 27th in 1980 52BadgingarraResearch Stn 17.3 on the 30th 17.2 on the 30th in 1967 44

Karnet 15.5 on the 30th 14.8 on the 29th in 1999 44Wongan Hills 16.5 on the 30th 16.1 on the 29th in 1990 44Beverley 15.2 on the 30th 14.9 on the 28th in 1998 41Narembeen 15.6 on the 30th 14.9 on the 5th in 1981 40Kalbarri 20.4 on the 30th 19.5 on the 11th in 1974 37Goomalling 16.0 on the 30th 15.4 on the 20th in 1985 35Troughton Island 27.7 on the 29th 27.6 on the 30th in 1998 32

Record highest September mean minimum temperature


ofrecord

Bidyadanga 19.7 19.4 in 2008 50Wyndham 25.2 25.1 in 1992 42Troughton Island 26.4 26.2 in 2009 32


page 6

Maximum temperaturesMean maximum temperatures were above to verymuch above average in the northern and westernKimberley, western Gascoyne and western parts ofthe SWLD with areas up to 3 °C above average in thesouthwest Gascoyne and west Kimberley. Incontrast, much of the remainder of the stateexperienced below to very much below averagedaytime temperatures, with an area of 4 to 5 °Cbelow normal maxima in the southern Interior andeastern Eucla. When averaged over the whole state,September 2010 was the seventh coldest Septemberon record in terms of mean maximum temperature(comparable records began in 1950).

A cloudband over the Pilbara caused record low dailymaximum temperatures at several sites on the 14thand 15th; while Meekatharra recorded its coolestSeptember day on the 2nd in the wake of a coldfront. Regular thunderstorm activity and cloudbandsthrough eastern parts of WA during the monthresulted in Warburton and Balgo Hills experiencingtheir coldest September on record in terms of meanmaximum temperature, whilst sites in the southeastKimberley, Interior and Eucla recorded their coldestSeptember in over 20 years.

A persistent ridge of high pressure over southern WAthroughout much of September 2010 resulted inseveral sites in the SWLD, particularly near the westcoast, breaking their highest mean monthlymaximum temperature records; while a warm to hotend to the month was experienced in the Pilbara,western Gascoyne and western parts of the SWLD aseast to northeasterly winds prevailed and severalhighest daily September records were brokenbetween the 27th and the 30th.

The hottest day was 42.7 °C at West Roebuck on the28th, followed by 42.4 °C at Curtin Aero on the 29th.

The warmest days on average were 37.8 °C atWyndham Aero, followed by 37.0 °C at Wyndham.

The coolest day was 10.9 °C at Kalgoorlie-BoulderAirport on the 1st, followed by 11.3 °C at LavertonAero on the 2nd.

The coolest days on average were 17.2 °C at Albany,followed by 17.4 °C at Esperance Aero, Rocky Gullyand Shannon.

Anomalies of mean daily maximum temperature inSeptember 2010

Decile rank of mean daily maximum temperaturein September 2010

There could be discrepancies between the values shown on these mapsand those at individual locations, as a result of the way the maps aregenerated.


page 7

Minimum temperaturesMean minimum temperatures were above to verymuch above average over much of the Kimberley,northern and western Pilbara, west Gascoyne andeastern Eucla; with much of the Kimberley up to 3 °Cwarmer than normal. In contrast, below to verymuch below average overnight temperaturesoccurred over the SWLD, southern Goldfields andwestern Eucla, with temperatures to 2 °C belownormal.

The persistent ridge over southern WA during muchof September 2010 resulted in many clear and coolerthan average nights, with stations in the GreatSouthern and inland Southeast Coastal observingtheir coldest September on record in terms ofminimum temperature, whilst several sites in theSWLD and Goldfields recorded their coldestSeptember in more than 20 years. In contrast to thecooler than normal trend for much of the month insouthern WA, a warm day on the 29th combinedwith middle level cloud over western parts of WAresulting in a number of locations observing theirwarmest September night on record.

Minimum temperatures were very much abovenormal in the Kimberley, with a few sites in theregion experiencing their warmest September onrecord. Wyndham observed a minimum temperatureof 29.4 °C on the 25th, which is the second highestovernight temperature on record for September forWA, just below the 29.7 °C recorded on the 25thSeptember 2005, also at Wyndham.

When averaged over the whole state, meanminimum temperatures in September 2010 werenear average; however Southwest WA was belowaverage (comparable records began in 1950).

The coldest night was −3.2 °C at Eyre on the 11th,followed by −3.1 °C at Salmon Gums Res.Stn. on the20th.

The coolest nights on average were 2.2 °C atNewdegate Research Station, followed by 2.3 °C atSalmon Gums Res.Stn.

The warmest nights on average were 26.4 °C atTroughton Island, followed by 25.2 °C at Wyndhamon the WA mainland.

The warmest night was 29.4 °C at Wyndham on the25th, followed by 28.8 °C at Wyndham Aero on the25th.

Anomalies of mean daily minimum temperature inSeptember 2010

Decile rank of mean daily minimum temperature inSeptember 2010



page 8

RainfallFollowing the driest winter on record in SouthwestWA, September 2010 saw a continuation of below tovery much below average rainfall in much of theSWLD with many sites recording their lowestSeptember rainfall on record and a host of othersobserving their driest September in at least 20 years.A strong cold front that crossed southern WA on the31st August and 1st September brought moderate toheavy rainfall to the southern Gascoyne, CentralWheat Belt, Goldfields and Eucla, with severalstations breaking their highest September dailyrainfall record in the 24 hours to 9 am on the 1stSeptember 2010. Eucla recorded 42.8 mm in the 24hours to 9 am on the 1st, breaking the previousSeptember record in 97 years of monitoring,however this value was again exceeded in the 24hours to 9 am on the 3rd with 61.0 mm as a lingeringmiddle level trough associated with the front on the1st moved over the region. Over the first 5 days ofSeptember, Eucla recorded 133.6 mm, one of thewettest periods in recording history at Eucla. Thiswet spell also took the September rainfall for Euclaabove its previous record, and with further rainfallduring the month, Eucla recorded 160.2 mm forSeptember breaking the previous record of 84.6 mmset in 1899. Aside from these events, and a fewweaker cold fronts during the first half of the month,a strong ridge dominated the weather for much ofthe month over southern WA resulting in the fourthdriest September on record for Southwest WA(comparable records began in 1900).

In contrast, much of northern, central and easternWA registered above to very much above averagerainfall in September 2010, with sites in the Pilbara,Interior and Eucla recording their wettest Septemberon record, and many sites in the Pilbara andKimberley recording their wettest September in over20 years. Thunderstorm activity in the Kimberleyovernight on the 6th saw Moola Bulla record50.0 mm in the 24 hours to 9 am on the 7th, which isits wettest September day in 96 years of record;while persistent cloudbands during the middle of themonth saw sites in the Pilbara also break theirhighest daily September records.

When averaged across the state as a whole, rainfallfor September 2010 ranked as the third wettest onrecord.

2010 has been an extremely dry year in SouthwestWA. Very much below average rainfall duringsummer (2009/10); below average rainfall inautumn; the driest winter on record; and very muchbelow average September rainfall has culminated inthe lowest January to September rainfall on recordfor Southwest WA. For further information aboutlonger term rainfall deficits in Southwest WA, pleaserefer to Special Climate Statement 22.

The wettest overall was 160.2 mm at Eucla, followedby 124.2 mm at Old Eucla.

The wettest single day was 68.2 mm at OldMornington Homestead on the 8th, followed by61.0 mm at Eucla on the 3rd.

Total rainfall in September 2010

Decile rank of total rainfall in September 2010



page 9

http://www.bom.gov.au/climate/current/statements/scs22.pdf

New rainfall records

Record highest September daily rainfall


ofrecord

Yarrie 20.0 on the 15th 9.4 on the 7th in 1920 105Yundamindra 36.0 on the 1st 31.5 on the 12th in 1960 104Warrawagine 26.0 on the 15th 25.4 on the 30th in 1937 99Edjudina 35.5 on the 1st 35.0 on the 28th in 1984 98Hyde Park 35.0 on the 1st 33.3 on the 15th in 1918 98Eucla 61.0 on the 3rd 39.9 on the 23rd in 1962 97Minara 34.2 on the 1st 25.4 on the 28th in 1984 97DalwallinuComparison 36.4 on the 1st 27.9 on the 8th in 1973 96

Moola Bulla 50.0 on the 7th 49.3 on the 8th in 1920 96Munarra 23.6 on the 1st 22.8 on the 28th in 1984 84Yeelirrie 33.7 on the 1st 33.0 on the 28th in 1984 83Pinnacles 30.4 on the 1st 25.5 on the 30th in 1992 77Warambie 14.0 on the 15th 9.2 on the 14th in 1982 73Xantippe 30.8 on the 1st 21.3 on the 10th in 1925 69Meekatharra Airport 23.8 on the 1st 21.4 on the 28th in 1984 65Yakabindie 33.0 on the 1st 25.9 on the 20th in 1955 63Dalwallinu North 39.0 on the 1st 24.4 on the 8th in 1973 62Marillana 38.7 on the 12th 35.0 on the 9th in 2006 60Wittenoom 41.0 on the 12th 19.2 on the 30th in 1986 60Pyramid Station 13.8 on the 15th 11.4 on the 6th in 1997 53Rawlinna Depot 36.0 on the 2nd 23.0 on the 29th in 1976 41Barvesk 39.8 on the 2nd 26.2 on the 20th in 1974 40Bull Camel 28.0 on the 2nd 26.0 on the 26th in 1979 40Dampier Salt 12.4 on the 15th 7.8 on the 27th in 1984 40McTaggarts 45.0 on the 2nd 27.6 on the 17th in 1997 40Sherlock 17.4 on the 15th 3.6 on the 11th in 1968 38Karratha Aero 15.4 on the 15th 10.0 on the 12th in 1986 37Telfer Aero 15.8 on the 15th 15.4 on the 21st in 1982 37Paraburdoo Aero 22.2 on the 11th 12.0 on the 6th in 1997 35Newman Aero 26.4 on the 12th 24.8 on the 9th in 2006 34

Record highest September total rainfall


ofrecord

Eucla 160.2 84.6 in 1899 129Warrawagine 29.6 28.7 in 1937 100Mundrabilla Station 90.0 64.4 in 1995 97Warambie 24.4 9.2 in 1982 73Marillana 54.7 43.8 in 2006 62Wittenoom 61.2 28.6 in 1986 61Carnegie 28.3 25.2 in 1982 55Giles Meteorological Office 63.2 61.4 in 2003 55Pyramid Station 13.8 11.4 in 1997 53Warburton Airfield 57.8 38.0 in 2004 50Redmont 52.6 17.8 in 1937 44Dampier Salt 17.3 8.6 in 1986 41Pannawonica 13.8 11.4 in 1974 38Sherlock 31.7 4.4 in 1968 38Karratha Aero 20.8 11.2 in 1986 37Newman Aero 44.6 35.6 in 2006 34

Record lowest September total rainfall


ofrecord

Pingrup South 5.2 5.4 in 2000 75Geraldton Airport 5.4 6.0 in 1977 69McAlinden 16.0 19.6 in 1969 65Quella Park 8.2 10.2 in 1989 60Cranham 12.2 18.3 in 1967 57Newdegate Research Station 4.6 6.8 in 2000 56Kuranda 14.8 17.1 in 1969 53Yoongarillup 25.0 25.3 in 1969 53Tarwonga 14.0 15.2 in 1969 47Eneabba 11.5 11.7 in 1967 45Lancelin 8.0 13.3 in 1969 45Coodernuppin 4.1 4.3 in 1980 43Glenmore 4.8 8.0 in 1979 42Bilbarin 2.4 6.6 in 2000 40Mordetta 3.8 8.6 in 2002 39Aston Downs 38.6 40.4 in 1974 38Crendon 28.8 31.2 in 2004 38Alexandra Bridge 44.2 44.8 in 1974 37Ferguson Valley 20.2 33.0 in 2004 37The Wold - Lowden 20.6 27.2 in 2004 37Jarrahwood 27.4 48.9 in 2006 36Caernarvon Park 9.0 12.6 in 1986 34Perivale Orchard 26.2 35.2 in 2004 34Springdale 33.6 45.2 in 2004 34Pickering Brook 40.5 42.0 in 1977 33Karingal 6.6 11.4 in 2000 30


page 10

Daily maximum temperature for September 20101 September 2010 2 September 2010 3 September 2010 4 September 2010 5 September 2010

6 September 2010 7 September 2010 8 September 2010 9 September 2010 10 September 2010





These maps are presented to give a statewide overview of conditions on each day through the month. There could be discrepancies between the valuesshown on these maps and those at individual locations, as a result of the way the maps are generated.


page 11

Daily minimum temperature for September 20101 September 2010 2 September 2010 3 September 2010 4 September 2010 5 September 2010








page 12

Daily rainfall for September 20101 September 2010 2 September 2010 3 September 2010 4 September 2010 5 September 2010








page 13

Summary of observations for Perth in September 2010Observations and most climatological values are from the "Perth Metro" site at Mount Lawley, except forsunshine, evaporation and phenomena which are taken from Perth Airport. Extremes are captured from acomposite of sites including Mount Lawley, former Regional Office sites near the city centre, and Perth Airport.

Observed this month Climatological valueTemperatureMean daily maximum temperature 21.8 °C 20.0 °CMean daily minimum temperature 8.2 °C 9.5 °CMean temperature 15.0 °C 14.8 °CMean temperature at 9 am 15.3 °C 15.2 °CMean temperature at 3 pm 20.9 °C 18.6 °CHighest temperature 29.0 °C on the 29th 32.7 °C on the 30th in 1918Lowest temperature 2.4 °C on the 13th 1.0 °C on the 22nd in 2008Days 30 °C or warmer 0 0.1Days 32 °C or warmer 0 0.0Days 35 °C or warmer 0 0.0Days 40 °C or warmer 0 0.0Nights 5 °C or cooler 7 2.6Nights 2 °C or cooler 0 0.4HumidityMean relative humidity at 9 am 57 % 68 %Mean relative humidity at 3 pm 38 % 54 %PressureMean MSL pressure at 9 am 1023.8 hPa 1019.6 hPaMean MSL pressure at 3 pm 1020.8 hPa 1017.6 hPaWindStrongest wind gust NW 50 km/h on the 7th NW 113 km/h on the 7th in 1973Mean wind speed at 9 am 10.8 km/h 12.5 km/hMean wind speed at 3 pm 14.0 km/h 16.7 km/hDays with gale-force gusts 0 1.3RainfallTotal precipitation 43.6 mm 80.9 mmNumber of rain days 6 15.9Wettest day 12.0 mm on the 8th 51.8 mm on the 14th in 1984SunshineMean daily sunshine 9.3 hours 7.6 hoursEvaporationMean daily evaporation 4.3 mm 3.6 mmPhenomenaDays of thunder 0 0.8Days of hail 0 0.2Days of frost 0 0.2Days of fog 1 1.3Days with mist or haze 13 16.3


page 14

Daily and mean maximum temperatures for September 2010Mean is the average of the daily maximum temperature for September 2010; it is only shown if there are sufficient days available. Anom isthe difference between the mean daily maximum temperature for September 2010 and the long-term average maximum temperature forSeptember. Decile is the decile rank of mean daily maximum temperature for September 2010 in the climate record of other Septembermean daily maximum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles areonly shown if there are sufficient years of climate record available. The lowest and highest maximum temperatures for each site forSeptember 2010 are highlighted.

North Kimberley (01) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Kalumburu 36.0 36.7 34.0 34.9 35.2 37.4 35.0 35.3 36.2 37.5 36.3 33.7 36.6 36.7 36.6 37.8 32.6 35.8 34.7 34.0 33.4 35.2 36.9 37.0 37.4 37.3 37.3 36.1 36.1 37.3 37.6Kuri Bay 31.0 32.5 32.5 33.1 33.1 32.1 33.2 31.8 35.0 32.2 35.6 33.7 34.1 33.9 35.1 35.8 37.3 35.1 33.6 34.1Mount Elizabeth 33.8 34.0 30.7 33.0 35.0 34.5 31.1 32.7 35.7 35.3 36.2 34.7 34.9 35.9 31.2 24.8 31.0 29.0 28.5 29.3 31.3 37.1 37.2Wyndham 37.0 37.2 35.4 36.0 35.1 37.4 35.4 35.8 38.5 38.5 38.0 38.0 38.7 38.8 38.4 38.5 33.9 35.8 36.5 31.3 30.5 33.9 36.2 38.0 39.0 38.7 39.1 39.1 41.0 39.0

East Kimberley (02) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Argyle Aerodrome 35.5 35.8 36.2 33.2 32.4 35.6 35.7 35.5 38.3 38.3 37.5 37.8 37.8 38.6 38.7 37.3 30.2 31.7 31.6 28.1 28.5 31.7 34.4 33.7 37.2 35.8 38.9 38.4 39.5 39.5 38.3Halls Creek Airport 32.0 −1.7 1 34.5 35.1 30.9 29.2 32.5 34.7 31.4 34.1 35.4 34.4 37.0 35.1 35.0 34.9 30.9 19.9 25.0 23.3 23.8 24.8 27.4 30.6 29.1 31.1 34.5 36.3 37.1 37.2 37.1 36.4Kununurra Aero 36.5 36.9 35.9 35.3 33.6 36.6 36.5 36.6 38.9 39.2 37.2 37.3 38.4 39.3 39.3 37.1 32.0 34.6 33.7 29.7 29.7 32.5 35.1 36.6 38.1 38.4 38.5 38.6 39.2 40.1 38.8Warmun 35.1 36.2 36.5 33.4 32.2 34.9 35.6 34.3 37.0 38.5 36.9 38.2 37.4 38.1 39.1 35.2 28.1 28.8 30.6 27.4 28.1 31.6 33.9 34.2 34.9 36.4 39.0 39.1 40.1 39.1 38.6

West Kimberley (03) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bidyadanga 33.8 30.5 29.0 29.6 30.2 33.1 32.7 28.5 31.5 36.1 38.5 36.6 36.0 38.4 25.1 26.0 30.0 32.5 28.5 29.0 30.5 33.1 34.5 34.5 37.7 39.1 40.3 39.5 41.5 41.0 41.0Broome Airport 32.8 +0.9 10 28.6 29.1 29.8 30.5 32.5 32.4 28.1 29.4 32.4 35.3 34.0 34.9 36.9 24.4 28.2 30.4 31.9 27.7 27.5 28.9 32.3 33.2 31.7 36.9 38.7 39.2 39.1 40.5 40.0 40.4Curtin Aero 35.9 35.0 34.8 31.9 32.4 35.0 37.1 34.5 36.3 39.5 38.2 37.9 37.1 39.5 31.4 30.2 31.2 33.3 28.7 29.6 31.0 33.9 35.2 37.0 38.7 40.3 40.7 41.1 40.4 42.4 41.9Cygnet Bay 32.5 32.0 32.0 29.5 29.5 30.5 35.0 31.0 31.5 34.5 32.0 34.5 34.0 34.0 32.0 29.5 30.5 31.5 28.9 29.5 30.0 30.5 31.5 33.0 36.5 37.0 36.0 35.0 36.5 35.5Derby Aero 35.1 33.1 33.6 32.4 32.2 34.8 35.0 34.4 35.5 37.6 37.3 35.4 37.1 38.7 32.0 30.8 31.8 33.6 29.4 29.8 31.0 33.0 35.0 36.2 37.8 39.8 41.0 40.3 34.8 41.5 38.4Fitzroy Crossing Aero 36.0 36.7 36.2 32.3 33.2 35.1 38.8 36.1 37.9 39.5 37.3 40.8 38.1 38.7 34.3 32.0 28.0 32.6 28.2 29.0 29.7 32.5 34.8 36.7 37.9 40.3 39.9 41.1 41.4 41.2 40.8

De Grey (04) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Karratha Aero 29.5 27.4 29.2 25.4 26.8 27.2 28.8 27.6 27.5 24.2 26.9 23.8 29.2 31.5 23.9 23.6 27.6 29.5 29.1 28.0 27.1 27.7 29.0 31.5 31.7 35.3 38.1 35.5 37.5 36.1 36.8Mandora 32.2 28.0 29.0 28.0 30.5 31.0 28.0 36.0 35.0 35.0 31.5 36.3 23.8 28.8 31.5 27.8 27.5 28.5 30.8 32.5 33.5 36.5 39.5 41.0 39.5 36.5Marble Bar 30.9 34.1 29.6 26.8 26.0 27.7 31.8 31.9 32.8 28.7 31.3 26.7 31.5 32.0 24.0 20.3 27.9 29.5 26.3 25.5 26.5 28.6 29.5 31.1 32.9 37.4 38.7 38.8 40.0 39.6 40.7Pardoo Station 31.4 32.0 31.0 28.5 28.5 30.0 29.5 29.5 33.3 34.0 29.5 33.5 29.0 35.0 26.0 21.5 28.5 30.5 28.0 27.5 28.5 31.0 31.5 33.0 34.2 36.5 37.3 37.9 37.5 39.0Port Hedland Airport 31.0 −1.2 3 28.9 29.4 28.1 27.7 29.1 28.9 27.6 29.7 31.3 28.9 27.7 28.0 34.1 25.3 21.4 29.8 31.5 28.3 27.5 28.9 30.6 31.5 32.8 34.3 37.6 36.6 39.2 39.1 39.2 38.0Roebourne 31.3 32.0 30.4 28.6 28.5 28.8 30.2 29.8 31.9 24.7 29.0 23.5 30.6 33.2 24.9 23.0 30.0 32.0 28.7 28.2 29.1 30.0 31.4 32.8 33.2 37.6 39.6 39.2 40.3 39.2 38.0

Fortescue (05) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Learmonth Airport 29.5 25.9 26.0 25.2 26.0 25.4 27.5 26.9 26.4 27.6 26.8 27.5 27.4 29.3 27.0 27.0 28.1 29.3 27.6 25.6 26.5 27.7 31.7 30.8 32.7 34.1 37.6 38.9 41.3 38.2 33.3Mardie 31.4 −1.1 3 30.0 29.0 26.4 29.3 29.5 28.8 27.3 27.8 30.9 28.4 26.6 31.7 32.8 25.5 27.1 30.8 32.6 30.2 28.8 29.7 31.8 32.6 33.7 33.8 37.2 39.3 35.9 38.0 38.3 38.5Onslow Airport 30.1 27.9 27.6 28.3 26.5 27.3 28.6 26.4 27.8 31.4 25.1 24.7 29.8 31.2 23.5 26.5 26.7 30.6 30.0 27.6 28.0 28.9 31.5 31.5 32.6 35.5 36.3 39.8 37.3 38.8 36.4Onslow 29.3 28.7 28.6 29.0 26.5 26.5 27.0 26.0 26.8 31.8 24.7 24.5 31.0 30.6 23.5 24.9 26.3 28.3 29.1 27.1 27.6 28.5 31.1 30.4 30.3 32.6 31.7 38.7 35.4 38.9 32.4

West Gascoyne (06) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Carnarvon Airport 26.2 +1.8 10 20.9 20.9 21.8 23.5 26.6 26.2 22.9 21.7 21.8 25.2 22.5 23.3 24.7 26.2 25.9 25.4 31.9 28.8 27.9 27.6 29.4 31.3 31.1 32.6 32.1 31.1 26.2 25.2Denham 25.1 22.0 20.0 19.9 22.0 25.0 24.0 22.2 22.4 21.7 22.5 22.8 21.8 22.2 23.8 25.0 25.4 29.5 26.4 26.2 27.2 28.4 30.0 31.0 27.0 28.0 26.5 27.5 30.0 26.7 25.8Emu Creek Station 29.9 24.4 23.9 24.3 26.6 27.8 29.3 28.4 26.7 27.7 29.2 26.3 27.4 30.4 31.1 30.5 31.2 31.6 28.7 27.4 28.3 29.9 31.3 31.6 33.3 36.4 39.3 40.4 35.0Gascoyne Junction 28.8 22.0 21.7 21.2 23.5 26.0 27.5 26.2 24.6 24.2 28.5 27.4 24.5 26.4 29.1 30.0 31.0 29.0 26.6 26.1 27.2 28.5 30.0 30.5 32.6 35.0 38.0 38.0 39.6 38.2 32.0Murchison 20.2 23.5 25.5 25.0 26.5 26.5 23.0 28.0 26.5 28.0 35.2

East Gascoyne (07) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Newman Aero 26.3 26.1 23.1 20.8 21.5 23.9 27.2 29.5 27.1 26.5 24.9 17.7 25.0 23.6 16.7 20.2 23.6 23.9 21.5 21.5 23.7 24.7 25.7 26.9 29.0 33.1 35.0 35.9 37.0 34.8 37.5Paraburdoo Aero 28.8 24.9 22.7 22.4 24.3 26.5 27.9 29.3 26.2 28.3 28.4 20.4 24.8 23.8 27.0 28.0 27.3 25.0 24.7 26.3 27.3 28.1 29.8 31.2 35.2 36.7 39.2 40.2 40.0 38.8

Murchison (07A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Meekatharra Airport 24.5 −0.9 4 18.1 13.3 17.0 19.2 21.7 22.4 25.6 22.2 21.3 24.7 26.7 20.6 19.9 22.1 23.8 23.9 21.6 20.4 21.3 23.5 25.0 25.1 26.5 29.5 31.9 33.7 34.7 33.0 33.3 34.0Mount Magnet Aero 23.4 16.2 13.6 16.4 19.0 20.2 22.1 24.3 19.8 19.4 22.5 24.6 19.5 18.4 21.2 23.2 23.3 21.4 20.1 21.1 22.8 24.1 24.7 27.1 29.2 31.1 32.6 30.6 31.0 31.9 30.7Paynes Find 16.5 18.7 20.8 23.2 23.9 19.1 18.6 22.3 29.8 31.7 31.4 30.0 30.2 31.8 24.6

North Coast (08) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Carnamah 14.5 17.2 19.1 20.5 23.3 21.0 17.5 19.5 20.0 20.6 17.5 21.6 24.2 25.2 23.0 21.0 24.0 24.0 26.2 26.5 28.2 33.0 28.0Dalwallinu Comparison 22.0 +0.8 7 13.4 14.1 15.4 18.9 20.5 22.0 21.4 16.7 17.3 19.0 17.0 17.3 20.5 22.9 24.6 22.1 19.8 22.5 23.6 24.6 25.1 27.4 28.3 29.9 30.0 31.1 27.8Eneabba 26.0 21.5 24.3 25.1 21.2 22.5 22.5 23.0 21.9 23.1 24.3 26.3 27.5 25.2 24.5 26.6 28.9 29.5 31.6 30.1 31.0 32.2 34.7 31.6Geraldton Airport 24.1 +2.1 10 18.8 17.6 18.6 20.1 21.2 23.4 20.8 18.7 19.9 21.6 20.2 19.1 19.5 23.1 24.7 27.2 25.7 24.3 25.3 25.8 28.3 29.0 30.0 27.6 25.7 23.6 29.7 31.8 36.1 24.4Kalbarri 26.0 20.6 19.2 20.9 22.9 25.0 24.4 22.1 20.4 20.6 22.6 22.4 21.0 22.6 26.6 23.6 27.6 28.4 27.0 27.9 28.1 30.3 30.2 31.6 29.2 30.0 29.5 32.3 33.6 34.3 24.9Morawa Airport 23.7 16.0 16.1 17.3 19.7 21.1 23.2 20.9 18.1 19.1 21.0 21.0 18.8 18.6 22.7 24.3 25.9 23.7 22.4 23.7 24.7 26.4 26.9 28.7 30.2 31.7 29.0 30.0 31.8 33.7 25.3Mullewa 24.4 17.1 16.3 18.0 19.6 22.2 24.1 21.5 18.7 20.4 22.2 21.3 18.7 19.8 23.5 25.0 26.7 24.5 23.0 23.6 24.7 26.9 27.4 29.5 30.5 32.1 29.4 31.2 33.7 34.8 24.7Wongan Hills 22.4 14.4 15.2 17.1 19.3 21.3 22.0 21.0 16.6 17.4 19.5 19.6 17.3 17.6 21.5 23.5 24.2 21.9 19.3 22.4 23.7 25.4 25.6 28.4 28.5 30.5 26.4 25.0 27.7 30.4 28.8

Central Coast (09) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Badgingarra Research Stn 22.2 16.1 15.4 16.8 19.3 20.8 21.9 19.3 16.4 18.0 18.3 18.9 16.1 16.7 20.6 22.8 24.6 21.9 19.9 22.3 24.1 25.4 26.3 28.3 27.4 28.3 23.8 26.2 29.4 32.0 29.8Bickley 19.0 15.0 15.2 16.2 16.3 18.1 19.8 16.8 12.9 13.3 16.3 15.1 14.1 15.5 18.1 19.8 21.0 18.6 15.7 20.2 21.3 22.6 24.0 25.3 23.8 24.7 20.8 19.6 24.2 26.4 20.4Gingin Aero 22.5 18.0 17.3 19.7 19.9 21.1 23.0 19.8 17.1 18.3 18.2 16.5 17.6 20.1 22.4 23.8 21.9 18.7 23.1 24.6 25.6 26.6 28.5 27.1 28.2 22.7 23.8 27.7 30.9 29.4Gosnells City 22.6 18.0 18.2 20.0 19.5 21.0 23.0 20.3 17.5 17.5 19.5 19.5 16.6 19.5 19.5 23.2 24.0 23.0 19.1 24.0 25.0 26.5 28.0 29.0 26.5 27.5 27.5 23.2 27.5 29.4 25.5Jandakot Aero 22.0 18.3 18.1 18.7 19.7 20.1 22.3 19.9 17.4 17.6 18.7 18.4 17.0 18.4 19.0 22.0 23.9 21.7 18.6 23.5 24.3 25.6 26.9 28.0 25.8 26.7 23.2 23.3 27.2 29.3 25.8Jurien Bay 23.7 19.7 19.8 19.5 19.8 22.2 23.3 20.5 19.5 20.7 20.7 20.7 19.1 20.5 20.7 20.6 27.8 25.4 23.6 25.8 26.7 26.6 26.0 27.2 24.6 23.2 21.6 29.0 30.5 34.2 32.6Karnet 19.5 15.0 15.5 16.5 18.0 19.0 16.5 14.0 15.0 16.0 15.5 16.0 17.0 20.0 21.0 19.0 16.0 21.5 23.5 25.0 25.5 24.0 21.0 20.0 24.0 26.5 25.0Lancelin 23.1 19.0 19.0 20.0 19.7 21.7 22.7 20.0 17.5 19.0 19.0 19.0 19.0 19.5 20.0 26.0 24.3 24.5 25.0 26.0 27.2 26.3 29.5 23.0 21.9 22.3 26.0 30.0 32.3 30.0Medina Research Centre 22.1 18.0 18.4 19.0 20.0 20.2 22.2 20.6 17.5 18.0 18.8 19.3 16.4 18.5 19.0 22.3 24.2 21.7 18.7 23.5 24.8 26.8 26.5 28.0 25.0 27.0 21.5 23.5 27.2 29.0 27.6Pearce RAAF 21.6 17.4 17.3 18.4 18.9 20.2 22.8 19.7 17.3 16.8 18.0 18.2 16.3 17.3 19.4 21.4 23.1 21.5 18.5 22.4 23.5 24.8 25.5 27.8 26.9 27.4 22.9 23.3 26.9 29.7 25.3Perth Airport 22.1 +2.1 10 18.6 18.3 19.9 19.6 21.1 22.5 20.0 17.4 17.9 18.2 18.3 17.3 18.9 20.7 22.5 24.1 21.8 18.6 23.1 24.0 25.2 26.5 28.4 26.0 27.2 23.6 23.2 27.3 29.7 24.3Perth Metro 21.8 17.5 17.7 19.0 19.5 20.0 22.7 19.4 17.4 17.0 18.2 18.3 16.5 18.2 19.3 22.0 24.3 21.8 18.8 23.1 23.9 25.3 26.7 28.2 25.9 26.9 21.7 23.1 27.4 29.0 25.0Rottnest Island 19.6 16.6 15.8 16.8 18.3 18.0 20.2 19.2 16.6 15.6 16.0 17.9 15.0 15.1 17.2 17.8 22.1 19.9 17.9 21.2 22.7 23.8 23.7 24.2 22.7 22.9 19.6 19.0 22.9 25.6 24.8Swanbourne 21.5 19.0 18.9 18.0 18.7 20.2 20.5 19.7 17.2 17.5 17.5 18.5 16.1 18.2 18.6 20.7 24.6 22.6 19.5 23.5 24.1 25.7 26.4 26.1 22.9 23.3 21.2 22.5 27.7 29.8 25.4

South Coast (09A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Albany Airport 17.5 14.3 15.3 16.0 15.6 15.6 19.5 18.7 14.8 13.4 14.7 18.1 12.3 13.1 15.3 15.6 14.8 16.4 16.3 17.6 19.3 21.5 22.1 26.7 20.8 20.1 18.5 15.6 19.0 24.0 19.8Albany 17.2 14.5 15.7 15.6 15.5 16.4 19.1 19.1 15.6 13.5 15.8 18.5 12.8 14.5 16.5 16.2 15.4 16.3 15.4 17.6 16.9 20.1 19.6 27.2 20.5 18.6 18.0 15.1 17.6 20.1 19.0Bridgetown Comparison 19.3 +1.1 9 17.9 16.6 19.0 18.8 18.5 19.6 19.0 14.3 15.1 14.2 17.1 14.4 15.5 17.0 19.4 20.3 19.0 17.4 20.4 22.6 25.2 26.1 23.0 24.5 21.2 16.5 22.5 25.2Bunbury 20.1 17.9 17.9 16.9 18.9 18.1 19.1 19.7 16.7 17.1 18.0 16.0 17.1 17.8 19.4 21.5 20.3 18.6 22.0 22.0 21.2 23.7 22.9 21.9 20.6 21.8 20.9 23.6 25.1 27.3Cape Leeuwin 18.4 +1.2 10 14.4 15.8 17.0 18.4 16.2 17.9 17.4 15.3 15.2 15.7 16.9 15.3 15.7 16.5 18.2 18.7 16.9 19.1 21.9 23.6 22.7 24.9 20.9 18.9 20.5 17.3 19.5 21.1 20.7Cape Naturaliste 19.1 +1.7 H 17.8 17.0 16.4 18.0 17.6 19.2 18.6 16.4 15.8 14.7 17.0 15.8 15.7 18.0 18.5 19.2 17.5 19.9 19.4 20.1 22.6 21.8 22.3 19.8 20.3 19.1 22.2 24.9 27.3Donnybrook 20.6 17.1 17.5 18.6 19.6 19.6 20.3 19.7 15.5 16.0 15.6 17.5 16.9 17.6 20.0 20.8 20.0 18.0 21.5 23.0 25.5 26.5 27.0 24.0 23.9 22.1 19.3 23.2 24.0 27.7Dwellingup 19.6 15.5 16.0 17.2 18.5 18.2 19.3 16.9 13.5 15.6 16.2 15.3 13.5 16.2 17.2 20.0 21.1 19.6 16.6 21.1 22.2 23.5 25.0 25.2 22.7 24.1 20.9 19.3 24.5 26.5 26.3Esperance 18.4 14.7 15.7 16.1 16.9 17.5 22.2 25.6 17.9 17.9 17.1 19.3 14.4 14.7 16.6 17.2 15.1 16.2 16.2 17.1 16.8 17.6 19.1 25.9 24.8 19.4 19.1 17.0 18.5 23.8 20.8Harvey 20.2 16.5 17.2 17.2 18.8 18.5 20.0 19.2 16.0 16.5 16.4 17.0 15.2 17.0 18.0 20.5 21.0 20.0 18.0 22.0 22.8 23.5 24.5 25.5 22.5 22.8 21.0 21.0 24.5 26.0 27.5Hopetoun North 18.6 15.8 15.4 15.7 17.2 16.4 24.1 25.6 18.0 14.8 16.9 19.6 13.9 15.1 16.0 16.9 15.8 16.8 16.1 17.3 17.9 19.6 20.6 27.0 25.5 19.8 20.4 17.2 18.9 24.3 19.4Jarrahwood 19.7 16.8 16.5 17.3 19.4 17.5 18.5 18.0 15.4 16.0 14.5 17.2 15.1 16.5 16.2 19.4 20.0 19.2 17.5 21.0 22.8 25.0 26.5 25.0 24.0 23.5 22.0 17.5 22.5 24.9 26.5Mandurah 20.7 18.0 17.7 16.9 19.3 19.1 19.6 18.5 16.4 17.1 17.4 18.4 16.1 17.4 18.1 20.5 23.4 22.2 18.7 23.0 22.1 22.5 24.0 23.0 22.6 22.4 21.6 22.5 25.7 27.3 28.0Manjimup 18.2 13.6 16.0 16.2 16.0 17.8 16.4 14.1 13.4 12.8 16.1 12.1 14.6 14.9 17.3 18.5 17.6 16.3 19.9 21.6 23.2 24.5 25.7 21.1 22.5 19.9 16.2 21.1 23.4 25.1North Walpole 17.7 13.8 14.8 17.2 17.0 16.0 17.5 18.1 14.0 14.0 14.5 16.4 13.5 14.1 16.3 15.5 18.0 15.4 18.6 21.3 22.7 22.5 25.8 20.0 19.9 18.7 16.4 19.9 21.6 20.7Pemberton 18.2 14.0 14.6 16.8 16.7 16.1 17.9 17.0 13.8 14.4 13.6 16.0 13.0 14.4 15.1 18.2 18.3 18.0 16.5 20.0 21.8 23.8 24.9 25.5 19.8 21.1 19.0 17.3 21.4 23.5 24.8Rocky Gully 17.4 13.5 15.1 16.0 15.6 14.4 17.5 17.4 13.7 12.8 12.8 16.4 12.3 12.5 14.5 16.1 15.1 16.4 15.0 17.7 20.4 21.8 23.7 25.7 21.0 21.8 19.1 16.9 19.7 23.8 22.8Shannon 17.4 13.0 13.7 15.6 16.1 15.2 16.9 16.7 12.5 13.2 12.9 15.1 11.9 13.4 16.7 16.3 17.4 15.6 18.2 20.8 22.8 23.4 24.9 19.3 20.7 18.5 17.1 19.9 22.6 23.0Windy Harbour 17.9 14.2 15.3 17.4 17.3 17.4 18.7 17.7 15.2 14.8 15.6 17.3 13.7 14.9 15.9 19.5 16.8 18.0 21.5 24.6 22.7 19.4 19.3 16.7 20.3 20.3 20.2Witchcliffe 18.7 15.2 16.5 17.5 17.8 15.7 18.9 17.2 15.6 14.4 14.5 16.8 14.3 16.1 15.1 18.1 18.8 17.5 20.5 20.7 22.3 24.3 25.0 21.1 19.5 20.0 18.0 22.7 23.0 24.6

North Central (10) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bencubbin 21.1 +0.1 6 13.6 14.0 14.1 18.4 20.0 21.7 21.9 17.3 16.1 19.3 20.2 15.9 16.5 19.5 23.6 22.1 19.6 17.5 21.1 22.5 23.7 28.0 29.6 27.4 24.4 26.3 28.7 27.3Cunderdin Airfield 22.4 17.7 17.4 17.7 19.9 21.5 23.0 22.4 18.2 15.9 19.4 19.3 17.9 18.1 21.1 22.8 23.5 20.8 18.8 22.2 23.0 24.4 25.6 29.0 28.9 28.7 26.6 24.2 26.5 29.2 27.7Merredin 21.7 15.5 15.9 16.0 19.4 19.5 21.8 22.3 16.5 16.4 19.0 20.7 17.3 17.5 20.2 23.2 22.2 19.7 18.2 21.3 21.7 23.7 24.8 27.5 28.8 29.8 27.5 24.5 25.4 27.1 27.5Northam 22.1 17.1 17.0 18.0 19.5 20.6 22.3 21.3 16.9 15.2 19.2 18.7 17.0 17.7 20.3 22.7 23.8 21.6 18.8 22.5 23.0 24.7 26.1 29.0 28.0 28.5 26.8 24.0 27.0 30.0 26.2York 21.9 16.5 16.8 18.2 20.5 22.0 22.4 21.0 17.0 16.0 19.1 19.3 17.5 17.5 20.0 22.5 23.4 20.6 18.4 22.5 23.0 25.0 26.4 28.7 28.0 28.0 25.7 22.7 26.5 29.5 22.0


page 15

Daily and mean maximum temperatures for September 2010Mean is the average of the daily maximum temperature for September 2010; it is only shown if there are sufficient days available. Anom isthe difference between the mean daily maximum temperature for September 2010 and the long-term average maximum temperature forSeptember. Decile is the decile rank of mean daily maximum temperature for September 2010 in the climate record of other Septembermean daily maximum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles areonly shown if there are sufficient years of climate record available. The lowest and highest maximum temperatures for each site forSeptember 2010 are highlighted.

South Central (10A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Beverley 16.8 17.8 19.2 20.6 21.0 20.6 16.6 16.4 18.8 21.2 19.0 22.6 23.2 25.2 26.6 28.4 28.2 28.2 25.8 23.4 26.6 29.4 21.4Brookton 20.6 16.1 16.2 17.6 18.3 19.8 21.3 20.3 15.9 16.1 18.5 17.5 15.0 16.3 18.4 20.9 22.0 19.1 17.7 21.2 22.3 23.3 25.2 27.4 27.2 26.3 24.0 21.2 25.1 26.5 22.2Corrigin 20.6 +1.7 10 15.9 16.4 17.1 18.5 20.2 22.1 21.5 15.4 16.5 19.1 18.5 15.2 16.7 18.9 21.2 21.2 18.2 17.5 20.4 22.2 23.0 24.9 27.4 27.4 27.2 24.5 21.4 24.2 27.0 17.8Hyden 21.8 17.0 16.1 17.5 20.5 20.5 24.0 24.5 17.2 17.7 19.7 21.0 15.9 17.0 19.1 22.5 22.0 19.0 19.4 22.0 25.5 24.0 26.2 28.4 29.0 27.6 26.0 22.5 24.9 27.1 19.6Jacup 18.6 13.4 14.5 17.1 16.9 16.9 22.3 22.8 15.5 14.1 16.7 18.3 12.2 14.5 16.3 16.8 13.6 14.4 16.4 17.3 20.1 21.1 23.9 27.8 26.2 24.8 21.9 17.0 19.6 23.4 21.3Katanning Comparison 19.1 +1.6 10 14.0 15.0 16.2 17.0 18.0 19.5 19.5 14.0 14.0 16.0 16.0 13.0 14.0 16.0 17.7 19.5 16.7 19.5 22.5 22.5 25.0 27.0 24.0 24.0 22.7 19.0 23.0 24.5 25.4Lake Grace Comparison 19.8 +0.5 6 14.3 14.7 16.2 17.1 18.8 21.8 21.5 15.5 15.2 18.0 18.5 13.5 14.5 17.2 19.4 20.6 18.0 18.8 20.4 22.7 22.6 25.0 27.4 25.8 26.3 22.5 20.0 22.7 24.7 21.5Narembeen 21.9 17.4 16.0 15.9 18.8 20.9 23.0 22.5 15.8 17.2 19.9 20.4 15.6 17.6 20.5 22.8 23.3 20.0 19.9 22.5 23.4 24.1 25.9 28.2 28.0 28.2 25.9 24.0 25.7 27.8 25.1Narrogin 19.3 14.1 14.5 16.3 17.2 19.2 20.0 18.3 13.2 15.1 17.4 16.2 13.5 14.5 17.3 18.7 19.8 17.6 17.5 20.0 21.8 22.6 24.4 26.5 25.1 25.2 22.0 19.5 23.0 25.5 24.4Ongerup 18.6 14.0 14.6 16.9 16.5 16.5 20.2 20.8 15.1 13.8 15.2 17.0 12.4 14.4 17.0 17.5 15.6 16.0 16.5 19.0 21.0 21.8 24.0 26.8 24.5 24.1 21.3 17.6 20.4 22.6 24.0Pingelly 20.2 15.8 15.8 18.0 18.1 19.9 21.0 20.0 15.4 15.9 18.3 16.2 15.0 16.2 18.2 20.0 20.6 18.4 17.1 20.3 21.5 23.2 24.6 27.0 26.3 25.9 23.4 20.6 24.3 25.8 21.8Ravensthorpe 18.7 13.6 13.7 16.3 15.7 16.0 22.0 23.5 16.0 14.7 17.5 20.1 13.4 13.9 16.4 17.2 15.5 15.7 16.8 17.8 19.9 21.5 23.0 27.1 25.9 24.7 21.0 17.4 20.3 23.9 20.1Wagin 19.6 15.0 15.2 17.1 17.2 19.1 19.8 19.6 13.8 14.6 16.9 17.0 13.9 13.9 16.3 18.6 19.9 17.8 18.2 19.7 22.0 23.3 24.9 26.9 25.3 26.0 22.5 19.2 22.4 25.8 25.5Wandering 19.8 14.4 17.8 18.6 19.9 20.7 19.0 14.5 15.6 17.6 16.4 13.8 14.8 17.7 19.2 20.4 17.9 16.0 19.7 20.8 22.6 24.1 27.2 25.4 25.5 22.4 19.6 23.4 26.4 24.1

Eucla (11) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Balladonia 19.9 13.8 14.0 14.8 18.9 16.0 19.1 24.0 19.8 18.5 18.9 24.8 20.1 16.0 17.1 19.1 17.0 17.6 17.4 19.0 20.4 21.7 23.5 29.4 25.4 31.4 18.6 20.6 22.9 17.4Eucla 17.8 13.1 12.3 14.0 15.5 16.5 17.4 20.0 22.7 18.3 16.5 21.5 23.9 17.6 14.8 16.0 16.3 15.9 15.4 15.9 16.1 16.4 17.1 17.7 25.6 19.5 24.7 17.3 17.1 18.8 21.5Eyre 19.0 15.3 14.3 15.7 18.2 18.2 19.6 25.0 19.6 17.3 19.2 24.5 19.8 16.8 16.8 17.3 17.4 16.5 16.7 16.7 16.4 16.9 18.2 20.0 26.9 21.4 27.7 18.0 19.0 21.0 19.7Forrest 18.6 13.5 12.7 13.6 15.6 16.3 16.8 17.9 22.4 18.1 17.8 21.6 23.5 16.2 15.6 17.1 17.1 16.7 16.1 17.1 16.3 17.5 17.8 18.5 25.8 24.2 27.1 21.4 19.1 20.8 23.3

South East (12) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bulga Downs 24.1 17.2 11.6 15.1 18.0 23.5 24.0 28.2 23.5 22.0 25.0 28.5 21.4 18.2 21.1 22.5 24.5 20.1 18.8 19.5 21.5 23.2 25.5 27.5 31.0 33.0 37.5 30.2 29.4 28.8 32.2Kalgoorlie-Boulder Airport 20.1 −2.2 1 10.9 12.0 14.0 18.5 17.2 20.1 24.0 18.8 18.0 18.9 24.7 17.5 16.6 18.0 20.3 17.7 16.6 15.0 17.9 17.7 19.8 21.6 24.4 28.5 26.7 32.2 22.4 21.4 24.0 26.2Laverton Aero 20.8 14.9 11.3 12.2 16.0 17.7 19.9 24.9 21.4 19.2 21.2 25.4 20.3 16.3 18.0 19.4 19.2 16.6 15.8 17.5 18.4 20.9 22.3 23.7 27.6 28.7 32.0 25.6 23.1 25.4 29.5Leinster Aero 22.5 18.2 11.6 13.9 17.1 19.7 21.2 25.5 21.9 20.0 22.8 25.3 20.4 18.4 19.4 21.1 21.8 19.7 18.3 18.8 20.7 22.3 23.3 24.8 28.3 30.1 32.9 29.0 27.0 28.3 34.5Leonora 22.0 −2.5 2 14.5 11.8 15.4 18.6 19.7 21.4 25.0 20.8 20.0 22.3 27.4 20.5 18.0 19.0 21.0 21.1 18.3 17.2 17.7 19.0 22.0 23.0 24.8 29.2 30.3 33.0 26.7 24.7 26.7 30.2Norseman 14.0 19.7 21.0 24.6 17.8 24.6 16.5 19.5 21.4 20.4 17.7 18.4 18.5 21.2 21.6 23.6 26.0 29.2 27.2 29.1 21.4 22.0 24.7 22.1Salmon Gums Res.Stn. 19.6 15.1 15.2 16.7 16.8 17.5 21.1 24.6 17.5 14.9 18.0 23.1 15.7 15.2 16.9 18.6 17.1 17.0 17.6 19.1 20.0 20.8 22.5 26.4 28.0 25.2 23.3 18.7 20.9 24.8 18.2Southern Cross Airfield 21.2 13.9 14.9 14.8 17.7 18.7 21.0 23.9 17.2 16.9 19.2 22.5 16.9 17.0 19.3 21.3 20.5 18.3 18.1 20.5 21.7 22.1 23.8 26.9 29.0 28.8 28.9 24.0 24.4 26.2 26.7Yeelirrie 23.2 19.6 13.4 15.5 18.5 20.5 22.0 26.7 21.8 21.4 24.0 25.9 21.2 18.4 20.0 22.0 21.9 20.0 18.4 19.5 21.8 23.0 23.8 25.5 28.8 34.0 31.2 29.0 29.8 35.5

North East (13) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Balgo Hills 30.2 33.8 33.3 28.0 26.2 29.5 31.9 32.0 34.1 35.9 31.9 36.7 33.9 27.1 23.3 18.3 23.9 21.6 22.3 22.9 24.9 27.4 30.8 32.0 34.3 34.8 36.0 36.5 36.8 36.8Carnegie 24.6 26.1 19.2 17.4 19.7 20.6 25.2 29.2 27.0 24.7 23.4 18.2 25.0 19.8 19.3 20.8 21.5 19.8 19.3 19.6 21.6 23.4 24.1 25.8 28.7 31.7 33.5 35.0 30.2 29.6 37.7Giles Meteorological Office 23.2 −3.8 1 31.5 31.5 16.8 17.3 20.4 24.2 23.2 29.6 24.9 24.0 23.2 21.5 21.2 20.5 13.7 16.1 13.5 16.1 17.7 19.6 21.1 22.1 23.6 26.0 28.8 29.5 31.5 32.5 26.2 29.3Telfer Aero 29.3 34.4 28.3 24.5 23.2 25.9 32.6 32.4 32.5 26.1 30.0 29.6 28.3 29.5 23.5 18.4 24.4 24.9 23.8 23.3 24.9 26.6 27.8 28.8 32.6 35.3 35.8 37.2 38.6 36.4 39.0Warburton Airfield 23.0 32.8 19.0 14.7 18.0 20.8 25.2 22.2 28.2 24.1 23.7 16.8 21.8 19.2 18.0 17.2 18.7 12.6 18.0 18.5 20.4 21.4 23.4 24.5 27.2 30.1 31.5 33.6 28.2 27.0 32.4Wiluna 24.0 19.5 13.1 15.8 18.6 21.6 23.5 27.0 23.1 22.5 24.7 25.6 21.9 18.6 20.2 22.4 22.4 20.0 19.6 20.2 22.1 23.6 23.7 25.7 28.2 31.3 33.8 33.0 30.5 31.6 36.2


page 16

Daily and mean minimum temperatures for September 2010Mean is the average of the daily minimum temperature for September 2010; it is only shown if there are sufficient days available. Anom isthe difference between the mean daily minimum temperature for September 2010 and the long-term average minimum temperature forSeptember. Decile is the decile rank of mean daily minimum temperature for September 2010 in the climate record of other Septembermean daily minimum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles areonly shown if there are sufficient years of climate record available. The lowest and highest minimum temperatures for each site forSeptember 2010 are highlighted.

North Kimberley (01) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Kalumburu 21.6 12.8 15.6 21.2 22.6 20.1 21.9 22.9 20.6 21.2 20.4 21.1 21.9 22.6 22.9 22.7 26.0 23.1 19.9 23.1 23.0 24.1 18.2 21.0 23.2 23.9 22.5 22.4 22.7 23.5 20.9Kuri Bay 23.5 22.1 23.5 24.1 25.9 26.5 26.5 25.5 23.8 22.9 21.7 23.4 21.7 24.5 23.8 23.7 26.4 25.5 23.8Mount Elizabeth 13.0 13.6 19.4 15.7 15.7 22.0 20.5 20.8 21.2 20.7 19.5 22.0 21.4 20.4 17.7 19.0 17.3 19.8 14.8 17.5 11.2 14.1 17.0Wyndham 25.2 18.7 22.0 26.9 26.0 23.4 25.7 26.4 24.7 25.7 25.4 25.5 26.1 26.4 26.8 27.2 25.2 24.3 24.9 23.0 21.9 21.9 23.8 26.5 28.7 29.4 28.6 27.2 26.0 23.9

East Kimberley (02) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Argyle Aerodrome 23.4 17.0 20.9 27.3 22.6 22.5 24.4 25.1 24.9 25.4 25.2 25.3 26.2 25.8 25.9 23.5 22.3 21.1 20.4 19.9 17.2 18.7 20.1 23.5 24.6 26.1 26.7 25.9 25.5 24.6 22.8Halls Creek Airport 19.5 +0.6 8 14.2 17.5 22.5 15.9 17.7 22.0 19.0 21.7 22.8 22.9 23.1 24.3 23.1 23.9 18.1 16.3 16.5 17.5 13.5 12.8 15.2 16.2 18.6 21.8 21.5 21.5 22.0 22.9 21.3 20.1Kununurra Aero 22.5 13.9 18.7 24.0 25.5 20.5 22.3 23.5 22.0 22.0 22.1 22.4 22.2 23.5 23.6 25.9 23.2 22.8 22.4 21.3 20.3 21.1 22.5 23.3 26.5 27.3 24.1 23.2 23.5 22.0 19.6Warmun 22.2 14.9 16.4 27.3 20.9 20.3 24.6 20.5 24.4 23.5 24.9 25.5 24.6 27.1 26.7 21.8 21.7 19.9 20.4 18.7 16.0 18.3 19.9 22.7 24.0 23.3 24.2 22.0 24.9 21.1 24.5

West Kimberley (03) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bidyadanga 19.7 19.3 21.7 17.5 16.5 18.0 15.1 21.5 20.7 22.5 22.0 21.5 20.0 21.5 22.7 18.7 19.5 19.7 16.0 17.0 15.1 18.7 20.0 23.0 22.5 22.5 24.5 20.0 18.0 18.0 18.3Broome Airport 20.2 +1.8 9 18.3 20.5 20.7 18.3 16.8 16.7 19.1 23.1 22.3 22.5 21.7 23.3 24.1 23.4 19.1 20.8 20.0 18.6 17.2 17.7 19.4 18.9 22.1 21.5 24.4 23.1 18.1 18.8 18.7 17.9Curtin Aero 20.6 17.4 17.1 15.6 17.8 19.0 17.8 20.4 20.1 22.5 25.0 24.2 21.6 26.4 24.1 19.0 21.1 20.2 18.3 16.4 18.0 19.3 20.2 22.8 22.9 26.1 27.0 19.4 19.3 18.6 20.6Cygnet Bay 20.9 18.5 18.0 17.0 18.0 19.5 23.0 21.0 21.5 21.5 20.0 21.0 23.0 25.0 22.0 24.0 23.5 22.0 20.0 22.5 19.5 19.5 22.5 21.5 23.0 17.5 21.5 20.0 20.0Derby Aero 21.4 20.3 19.1 18.6 17.9 17.3 19.2 22.3 22.2 24.9 24.2 22.6 23.6 24.5 23.3 19.7 21.8 21.4 19.1 17.2 19.1 20.2 21.0 23.9 22.9 25.8 26.5 20.7 22.1 21.7 19.0Fitzroy Crossing Aero 19.9 13.9 20.0 19.8 17.4 16.7 17.5 23.7 22.5 23.8 24.3 20.5 23.8 24.8 24.0 18.8 19.2 18.2 17.9 15.3 17.1 15.2 16.7 19.9 21.7 24.1 20.2 19.5 23.1 19.9 18.7

De Grey (04) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Karratha Aero 17.5 21.0 14.7 13.4 12.5 11.9 13.1 17.1 18.3 18.9 18.2 20.9 18.1 17.3 22.9 16.8 15.4 17.1 18.7 18.4 18.8 16.5 16.2 17.0 17.8 17.0 20.9 19.7 18.2 19.1 20.0Mandora 12.5 13.8 15.8 16.0 17.0 17.0 18.8 20.0 20.0 19.5 15.6 19.0 15.8 14.0 17.0 16.6 18.5 19.0 19.5 20.0 20.0 19.0 21.0Marble Bar 16.9 17.5 18.3 14.2 10.6 14.5 11.1 13.1 14.6 20.3 18.3 21.8 18.9 17.5 21.2 14.6 13.1 16.0 13.9 14.9 15.7 15.4 16.5 18.2 18.2 20.3 18.9 17.4 18.3 23.4 19.7Pardoo Station 17.5 18.5 16.0 16.1 14.0 14.0 13.5 17.0 16.0 22.0 20.4 22.4 20.6 19.1 15.5 14.5 16.5 16.0 16.5 17.5 17.5 16.5 17.0 19.4 20.3 20.2 17.1 16.7 18.8Port Hedland Airport 17.3 +2.0 10 19.6 17.5 13.3 13.3 12.8 9.7 17.6 16.3 21.9 20.3 22.0 19.9 19.5 20.6 16.2 13.6 16.2 17.3 16.7 17.3 18.2 14.8 15.7 16.6 18.3 19.9 19.4 17.3 18.9 17.8Roebourne 17.2 19.3 16.9 14.7 14.5 13.6 12.6 16.0 17.0 18.0 17.9 17.9 18.0 18.0 22.4 16.6 15.9 17.0 16.3 16.2 16.6 15.8 17.0 16.9 14.5 18.0 22.0 19.5 18.0 18.9 19.0

Fortescue (05) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Learmonth Airport 14.2 14.8 12.4 10.2 8.9 10.0 9.7 10.8 12.0 12.3 16.4 16.6 11.7 13.1 16.9 18.8 14.9 14.5 15.7 13.9 11.9 11.4 11.5 13.0 12.2 14.3 18.5 19.4 20.9 18.3 19.5Mardie 16.0 +1.9 10 18.8 12.8 10.3 11.1 11.2 11.9 12.3 13.4 20.4 19.6 20.4 14.6 14.0 19.8 18.0 17.1 18.0 18.4 15.5 17.8 14.7 16.3 15.5 14.6 13.9 18.5 17.7 18.4 17.6 17.9Onslow Airport 16.5 17.6 14.7 13.6 13.4 11.9 13.6 15.3 15.0 16.8 19.3 18.0 14.3 15.6 20.1 17.5 18.7 16.0 16.0 17.1 16.1 14.8 14.3 15.1 15.0 15.3 19.8 20.2 21.0 18.0 19.7Onslow 16.5 17.1 14.3 13.4 14.0 13.5 13.5 16.0 15.0 17.0 19.5 18.0 14.5 15.5 17.5 18.2 20.1 15.3 17.8 17.5 16.0 14.9 14.4 15.8 14.5 15.2 19.5 19.8 20.8 19.2 18.6

West Gascoyne (06) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Carnarvon Airport 13.1 −0.7 3 14.9 13.1 8.4 10.1 9.0 11.2 9.3 11.8 9.4 12.4 15.3 14.5 12.3 12.8 10.4 15.8 11.7 17.0 13.9 11.4 11.6 13.8 12.7 12.0 14.7 17.3 20.8 20.1Denham 15.3 13.7 12.4 10.4 11.4 12.0 12.4 13.0 16.7 15.6 13.7 15.1 14.3 11.2 11.6 14.1 14.7 19.0 17.0 15.8 17.1 15.0 17.1 15.9 16.5 16.7 17.3 18.1 19.5 20.8 21.2Emu Creek Station 14.9 16.1 12.5 12.2 11.8 12.5 11.7 12.3 12.8 14.8 15.7 15.3 12.5 14.6 18.7 16.9 16.2 15.2 17.1 16.4 18.0 15.3 14.4 14.5 13.7 16.0 16.3 18.1Gascoyne Junction 13.7 11.0 11.9 9.2 9.4 10.7 12.3 10.0 10.2 11.1 12.0 12.7 11.1 14.3 14.2 16.2 13.1 19.8 15.7 15.5 15.6 13.8 15.0 13.6 11.8 14.3 14.7 16.5 17.2 18.1 19.1Murchison 9.9 6.8 8.2 9.2 9.8 11.2 9.6

East Gascoyne (07) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Newman Aero 11.8 18.4 14.6 9.0 6.5 5.6 7.4 10.1 11.9 12.4 9.9 13.8 13.7 9.5 14.7 11.6 9.1 12.0 8.9 11.9 10.9 10.5 10.5 10.5 9.0 11.6 13.8 13.7 15.4 19.3 17.6Paraburdoo Aero 14.3 17.4 11.4 10.3 9.4 10.1 12.5 8.1 10.1 12.9 14.5 16.4 13.7 14.7 14.3 13.8 16.3 13.6 14.3 14.3 14.1 14.7 14.5 14.5 14.6 15.8 17.6 19.3 22.5 18.5

Murchison (07A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Meekatharra Airport 11.0 −0.4 5 9.9 8.9 5.0 5.2 6.7 9.7 10.4 10.2 8.0 8.8 13.4 10.2 8.5 10.2 9.0 11.4 10.7 9.2 9.7 9.1 10.7 10.9 11.5 13.5 11.6 15.9 16.8 17.6 17.4 18.7Mount Magnet Aero 10.4 10.7 9.0 4.8 5.5 6.9 8.9 9.6 11.6 7.3 9.0 9.6 9.5 6.1 5.2 7.3 11.5 11.5 9.2 10.2 9.5 11.4 10.8 10.2 11.5 13.0 13.9 15.0 14.9 17.1 20.4Paynes Find 3.1 4.5 7.2 7.1 9.3 6.7 9.2 6.5 8.5 9.2 13.2 11.8 16.1 17.9

North Coast (08) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Carnamah 9.2 4.8 3.0 7.0 6.1 6.0 8.6 7.6 6.8 4.5 6.9 3.8 4.0 6.8 9.0 8.7 8.0 9.1 10.4 11.0 12.5 9.9 17.0Dalwallinu Comparison 6.9 −1.0 1 9.0 3.8 3.6 4.5 6.9 7.0 5.9 5.8 6.2 6.5 5.2 2.6 3.6 4.9 6.9 6.4 5.2 5.0 5.0 6.2 6.9 8.3 9.8 10.7 9.4 14.4 16.4Eneabba 7.0 7.9 4.8 8.8 6.1 7.5 8.5 7.1 6.9 6.5 7.5 8.8 11.7 8.5 9.9 6.5 12.4 12.5 11.0 8.0 11.0 10.1 10.5 16.7Geraldton Airport 7.7 −1.5 1 9.3 4.7 3.5 6.5 7.1 6.5 7.4 11.5 9.8 7.1 5.4 11.0 2.4 1.9 2.1 3.5 10.6 8.0 4.6 7.9 11.6 7.4 9.0 6.4 5.3 10.8 8.2 8.8 13.1 19.1Kalbarri 10.9 9.2 8.9 3.6 7.9 10.9 9.5 8.5 13.4 13.1 10.4 8.2 10.9 7.0 7.4 6.0 6.4 14.6 12.4 9.1 13.5 14.0 12.2 11.2 7.9 11.2 14.5 11.9 16.5 15.1 20.4Morawa Airport 7.2 8.6 6.2 3.3 3.8 5.2 6.2 5.5 8.9 5.8 6.2 5.5 6.7 2.6 3.9 3.6 4.6 8.2 5.1 9.8 8.3 7.4 5.0 5.1 6.3 8.1 11.2 10.5 11.0 17.1 16.8Mullewa 9.1 8.8 7.4 4.5 5.2 8.6 8.5 6.5 9.8 7.8 6.4 7.7 8.5 4.4 4.7 7.4 8.8 10.6 8.7 9.2 9.6 10.4 9.8 10.9 9.4 11.8 12.2 13.2 14.7 17.8Wongan Hills 6.7 9.5 3.5 2.0 5.4 5.1 6.0 5.5 7.5 9.3 5.5 3.5 1.4 1.9 2.7 5.8 7.0 5.6 5.5 7.0 8.2 6.5 9.0 9.0 9.5 9.1 6.3 14.5 16.5

Central Coast (09) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Badgingarra Research Stn 7.8 9.1 5.0 3.4 4.2 5.4 7.9 3.8 5.8 8.7 5.0 4.3 8.3 3.8 4.3 6.2 8.9 8.1 7.0 8.9 7.3 8.4 9.0 9.8 6.7 11.0 10.1 10.7 11.5 15.4 17.3Bickley 7.6 7.2 4.4 4.8 8.6 7.2 7.3 9.3 5.9 7.6 5.0 5.7 7.2 3.0 4.8 6.0 7.9 7.6 5.2 5.6 7.6 7.7 8.3 9.9 12.9 10.6 8.9 9.6 6.9 11.8 14.3Gingin Aero 6.0 10.4 4.9 −0.2 6.2 1.3 1.9 1.8 6.1 11.0 0.5 9.8 0.3 1.6 4.5 9.1 10.7 8.8 3.8 5.0 6.2 2.2 2.9 2.8 8.3 3.5 7.6 8.4 16.6 18.7Gosnells City 6.4 5.6 9.3 5.5 5.6 7.6 7.4 10.5 4.2 10.5 9.0 9.4 12.0 12.0 9.2 8.0 6.0 9.5 7.5 10.0 17.0 18.5Jandakot Aero 6.6 9.4 4.1 2.1 7.2 2.8 3.5 6.3 7.2 9.9 3.0 2.1 9.4 0.5 2.6 4.1 9.8 10.8 8.8 8.4 6.5 5.7 4.2 3.1 4.1 6.7 5.5 9.0 8.9 14.7 18.5Jurien Bay 8.2 7.8 4.8 4.0 7.5 6.7 7.0 5.2 13.8 13.9 6.7 6.5 13.1 4.2 3.4 4.2 5.9 11.0 10.5 4.5 7.2 12.7 8.6 9.0 6.6 9.0 9.0 9.6 10.0 10.0 14.0Karnet 6.6 8.0 3.0 3.0 5.0 4.0 6.0 5.5 8.0 2.0 2.0 3.0 3.0 6.0 9.0 8.5 6.0 9.0 8.5 5.0 7.0 5.5 6.5 10.0 8.0 14.0 15.5Lancelin 9.1 10.7 4.5 5.0 8.0 9.5 8.5 7.5 8.5 7.8 5.0 7.0 5.6 10.0 8.3 5.0 9.0 10.3 9.6 11.3 8.0 12.7 11.3 10.5 11.0 14.3 17.5Medina Research Centre 7.9 10.3 5.0 2.2 7.5 4.5 4.8 7.5 9.6 10.2 4.5 4.0 9.5 2.9 2.9 3.5 11.5 11.0 9.0 6.6 8.2 9.4 7.0 6.0 6.2 9.0 8.3 11.9 10.8 15.0 17.8Pearce RAAF 8.0 11.1 5.4 3.7 9.3 3.5 4.1 5.3 8.0 10.6 3.5 2.5 9.9 5.8 7.0 7.7 10.5 11.0 9.7 5.5 8.8 12.2 3.3 5.9 5.6 7.9 5.6 9.7 11.2 16.6 19.1Perth Airport 8.0 −1.1 1 11.1 4.0 5.0 8.4 3.7 4.9 6.7 6.3 10.5 3.5 3.4 10.0 2.7 6.6 8.7 9.3 11.4 9.5 7.8 8.0 10.0 4.4 7.0 6.3 8.8 6.4 11.2 10.8 14.9 19.2Perth Metro 8.2 10.2 5.9 4.2 9.1 4.9 5.5 7.6 9.1 10.4 4.5 3.9 10.0 2.4 3.9 5.3 11.5 11.2 9.1 8.6 9.3 7.4 4.9 6.1 6.7 11.0 9.1 12.1 10.5 13.6 18.2Rottnest Island 12.7 11.5 9.5 10.7 12.4 12.5 11.9 14.2 11.2 11.9 12.3 11.2 10.9 8.6 10.3 11.5 12.8 11.9 11.1 10.9 13.7 14.7 14.0 14.7 15.4 14.8 14.3 13.5 12.6 16.2 18.6Swanbourne 9.8 10.1 5.9 6.3 10.7 8.2 8.3 10.4 11.4 9.8 7.7 6.7 9.2 4.9 6.7 6.9 12.0 11.0 9.8 9.3 10.4 11.6 9.2 10.9 11.2 11.8 10.7 12.2 10.7 15.7 15.5

South Coast (09A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Albany Airport 7.2 8.4 6.5 6.6 8.6 9.1 4.6 8.5 5.0 7.2 6.5 7.8 7.3 6.9 6.5 4.5 6.1 7.2 9.4 9.4 5.5 7.3 4.5 4.0 10.6 6.1 8.5 8.9 6.3 7.2 12.1Albany 10.1 11.3 8.6 9.0 10.4 10.5 8.2 9.8 6.4 9.8 9.2 9.6 9.4 9.1 9.1 8.8 11.4 11.8 12.0 12.4 8.7 9.5 8.4 9.0 12.0 8.5 11.8 11.4 11.5 9.4 15.5Bridgetown Comparison 4.4 −1.4 1 2.4 2.6 5.8 3.5 2.3 6.2 9.4 2.2 4.3 1.6 5.5 6.1 1.9 1.8 2.8 4.1 4.9 3.8 1.9 5.1 4.4 2.4 6.1 5.9 5.9 10.6 3.2 3.6 8.6Bunbury 6.9 3.5 2.9 6.8 3.7 3.2 10.3 4.5 7.7 3.8 7.0 1.4 2.5 4.5 10.4 9.8 8.6 8.0 9.7 7.4 3.6 4.3 8.0 8.1 8.0 11.6 9.9 11.1 13.9Cape Leeuwin 12.0 +0.4 7 11.4 10.8 10.3 12.8 11.5 12.2 14.8 9.8 10.7 10.0 13.3 9.4 8.7 10.1 9.8 11.4 11.1 8.8 10.5 11.8 12.6 14.0 17.7 13.2 16.0 13.2 10.9 13.9 16.0Cape Naturaliste 10.3 −0.2 4 7.6 7.1 8.2 11.6 10.4 10.1 13.4 8.7 8.9 7.4 12.3 9.8 7.4 8.6 7.7 8.5 10.1 8.1 12.4 9.8 11.4 12.3 16.1 10.1 14.2 10.9 8.7 12.3 13.6Donnybrook 6.6 6.5 2.4 6.0 5.5 3.4 3.6 9.0 3.0 5.5 3.1 4.8 0.6 4.0 4.6 9.0 9.5 7.5 7.2 8.5 9.5 6.0 9.0 6.2 5.9 7.4 10.9 8.2 10.4 13.0Dwellingup 5.1 7.6 1.6 1.3 6.1 2.9 2.1 4.5 7.9 1.5 1.1 7.1 0.5 1.3 2.5 6.6 7.8 3.9 6.4 5.1 4.5 3.0 3.6 6.8 7.4 6.2 10.3 6.5 6.4 14.4Esperance 8.5 11.4 8.1 9.5 8.6 8.9 8.0 9.0 9.3 10.5 7.1 6.6 9.3 8.2 7.2 6.0 6.6 8.7 10.1 10.7 5.2 5.9 7.7 6.6 12.3 7.9 8.6 12.0 8.5 7.1 10.1Harvey 7.4 8.2 3.8 5.5 6.0 5.8 5.5 5.5 6.0 7.8 5.0 5.0 6.0 3.5 4.0 6.2 6.5 10.5 8.5 7.5 8.0 9.8 8.0 10.5 7.0 8.0 7.8 10.0 9.2 12.8 14.5Hopetoun North 7.8 11.3 8.0 9.7 8.7 9.4 5.7 8.0 7.4 10.6 4.4 5.6 10.2 8.5 8.9 5.7 6.7 8.5 9.4 6.4 3.8 3.4 6.1 5.2 10.6 7.4 9.7 12.9 7.3 4.4 8.8Jarrahwood 4.1 2.5 0.4 2.7 3.1 1.6 3.0 10.1 3.0 3.6 −0.4 7.4 4.7 1.4 1.5 −0.7 5.2 9.0 4.8 5.7 5.5 4.4 0.5 1.7 6.8 1.5 5.5 9.2 5.5 5.5 7.9Mandurah 10.9 10.9 7.3 8.0 10.5 9.0 8.9 12.8 11.3 10.9 7.0 7.9 10.9 7.0 8.9 9.5 11.8 11.5 10.5 9.3 11.6 12.2 11.1 11.5 13.6 12.5 12.5 12.7 11.2 15.2 17.9Manjimup 6.2 5.2 6.4 6.8 4.7 5.7 9.8 3.8 5.4 3.7 8.6 5.0 4.4 3.8 4.3 5.9 5.0 5.9 3.9 5.8 5.7 6.3 8.5 10.9 4.8 7.8 8.9 4.8 6.7 10.7North Walpole 8.6 8.5 7.0 7.2 10.1 9.6 8.1 12.1 6.0 7.5 8.3 10.4 8.3 7.5 4.0 7.9 7.2 6.4 6.7 7.4 9.1 8.9 10.7 13.5 6.9 11.2 9.0 7.4 9.1 13.7Pemberton 7.1 6.2 7.2 4.5 8.5 6.2 7.4 9.8 4.8 6.3 4.3 8.2 6.3 5.6 3.9 4.2 6.3 5.6 6.5 4.5 6.2 7.4 7.8 9.9 13.1 5.5 9.7 10.0 6.5 8.7 11.7Rocky Gully 5.7 5.2 4.4 3.1 8.5 3.6 2.8 8.6 4.0 5.3 2.6 7.9 5.7 4.0 3.0 3.9 6.0 4.9 4.7 4.2 6.6 6.7 6.4 8.1 10.0 4.6 7.2 7.4 4.6 6.7 10.8Shannon 6.2 5.8 7.1 3.1 8.8 6.2 5.4 10.2 4.1 4.8 2.8 8.4 5.7 3.6 2.5 5.3 5.6 4.0 5.4 6.7 6.7 6.5 6.0 10.1 4.2 8.7 8.7 5.2 7.1 12.0Windy Harbour 8.4 8.4 8.1 5.3 11.4 9.4 7.9 10.5 6.5 8.8 9.7 10.8 7.6 8.8 6.6 5.2 3.0 7.3 8.2 7.5 8.3 14.6 10.3 5.5 5.6 14.6Witchcliffe 7.1 7.6 7.1 3.4 7.3 9.6 9.6 12.6 7.6 6.4 4.4 10.4 8.9 5.3 4.9 3.0 6.0 4.2 4.7 6.1 3.7 6.9 13.3 5.0 9.2 9.4 5.0 4.9 11.7

North Central (10) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bencubbin 7.0 −0.2 5 9.3 5.3 2.8 4.3 5.7 5.7 8.0 8.9 9.0 4.5 4.4 8.2 0.5 3.3 4.6 8.5 7.3 4.6 4.2 5.5 5.5 6.9 7.9 10.5 10.6 9.3 13.9 17.5Cunderdin Airfield 4.3 9.3 4.6 −0.7 2.6 1.5 0.7 2.7 6.2 9.5 1.5 −0.7 6.1 −2.6 −1.6 1.4 8.0 8.4 1.9 3.8 2.5 3.3 0.1 1.6 2.6 4.0 7.2 11.3 8.3 8.6 17.0Merredin 6.6 8.8 4.4 2.6 1.3 5.0 4.9 3.9 8.0 8.8 1.7 0.9 6.5 −1.3 3.9 6.5 8.4 8.8 6.3 6.1 7.5 8.3 6.1 6.2 6.1 10.5 8.4 11.2 8.3 13.0 17.3Northam 5.2 9.4 3.8 0.4 7.7 2.4 2.3 2.7 6.2 9.0 1.4 1.5 7.7 −0.9 1.2 4.4 6.9 8.2 5.7 6.0 4.6 2.4 1.3 1.4 3.7 7.3 8.5 10.6 7.5 7.0 16.3York 2.8 9.0 1.3 −1.7 5.0 −0.2 0.0 −0.6 5.5 5.5 −1.4 −0.3 4.6 −2.2 −1.2 −1.0 5.0 7.5 2.4 3.0 1.0 0.0 −1.5 −0.6 1.0 4.4 7.0 8.5 4.5 4.1 15.5


page 17

Daily and mean minimum temperatures for September 2010Mean is the average of the daily minimum temperature for September 2010; it is only shown if there are sufficient days available. Anom isthe difference between the mean daily minimum temperature for September 2010 and the long-term average minimum temperature forSeptember. Decile is the decile rank of mean daily minimum temperature for September 2010 in the climate record of other Septembermean daily minimum temperatures; “L” indicates this is the lowest on record, and “H” it is the highest on record. Anomalies and deciles areonly shown if there are sufficient years of climate record available. The lowest and highest minimum temperatures for each site forSeptember 2010 are highlighted.

South Central (10A) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Beverley 9.0 0.8 −0.4 7.0 1.6 1.8 5.0 0.4 0.6 4.6 4.8 5.4 1.4 1.6 2.0 4.2 5.8 7.6 9.6 7.0 6.6 15.2Brookton 4.7 8.2 2.8 −0.6 3.6 1.4 1.2 1.0 2.5 7.1 0.6 0.9 6.5 −1.5 2.0 4.7 7.7 7.2 6.6 5.4 7.4 3.1 5.2 3.0 3.8 7.1 8.8 8.8 7.6 8.3 9.4Corrigin 4.6 −1.1 1 8.6 4.5 0.0 3.8 0.4 1.1 2.8 6.3 7.7 −0.3 0.8 7.8 0.0 1.1 4.4 6.5 5.5 3.5 4.8 3.8 1.0 2.3 2.3 6.0 7.5 10.0 11.0 6.7 9.2 9.5Hyden 4.9 7.9 5.5 5.7 3.5 0.5 2.6 3.0 7.5 7.5 0.1 0.0 6.5 3.0 0.5 0.5 6.0 5.5 3.0 4.0 3.5 3.5 5.0 3.5 6.2 6.5 8.3 9.0 6.5 6.8 14.2Jacup 4.4 3.5 2.5 1.3 5.3 3.2 3.9 4.6 3.4 3.8 0.8 2.1 6.9 4.5 6.4 3.2 3.1 6.9 5.3 2.2 1.9 4.0 5.4 6.1 8.9 2.4 6.7 8.7 2.2 5.4 8.2Katanning Comparison 4.0 −2.4 L 4.5 1.0 1.0 4.5 2.5 2.0 5.7 3.5 5.5 1.0 3.0 6.5 3.0 2.0 1.0 3.6 7.0 1.7 3.0 4.0 1.5 2.5 7.5 4.5 5.0 10.0 4.2 4.4 10.0Lake Grace Comparison 5.3 −1.4 1 6.7 3.9 1.0 4.6 1.7 3.2 4.7 4.9 7.7 0.0 7.2 3.0 2.2 3.3 5.7 5.3 2.8 5.8 6.1 6.2 4.5 5.0 8.4 6.0 9.0 10.0 6.3 7.3 12.0Narembeen 5.3 8.2 4.4 2.7 2.7 2.5 3.5 3.2 8.1 7.8 2.1 1.5 0.9 2.2 3.0 7.4 6.3 3.3 2.9 3.2 3.5 4.4 5.4 6.8 7.4 8.9 9.6 7.0 9.3 15.6Narrogin 4.5 6.0 1.9 0.0 3.6 0.9 2.4 4.3 4.2 7.8 0.0 0.9 7.6 −0.2 0.2 1.7 4.8 5.6 3.7 5.3 5.2 4.0 2.8 6.2 7.0 7.1 9.0 10.1 5.1 6.5 12.3Ongerup 4.8 5.4 4.0 5.2 4.7 2.0 4.4 4.5 3.6 5.0 1.4 0.7 6.4 3.2 7.5 2.0 5.4 6.8 6.4 2.2 3.8 4.2 3.5 4.5 8.0 4.4 6.6 9.5 4.0 5.0 9.6Pingelly 5.8 7.4 3.0 1.0 4.6 3.1 3.4 3.8 4.6 8.6 1.6 1.6 7.6 0.0 1.4 3.7 7.4 7.2 6.4 6.5 7.6 6.4 5.7 6.6 7.2 6.6 8.7 9.5 7.5 10.1 13.9Ravensthorpe 6.1 5.7 6.4 6.1 4.9 5.1 7.0 8.9 5.2 6.9 2.5 2.5 7.8 5.4 6.4 2.0 3.7 5.4 4.8 4.5 4.9 5.6 7.6 9.0 11.2 4.5 6.9 10.3 4.1 7.5 9.2Wagin 4.3 5.7 1.1 1.3 5.4 2.2 3.0 5.4 3.3 6.5 1.0 1.8 7.5 1.7 1.4 1.6 4.7 7.0 2.2 4.0 5.0 2.8 2.0 3.0 7.9 5.2 7.3 10.6 4.0 4.4 10.8Wandering 3.0 7.0 3.7 0.4 0.8 2.0 2.4 8.4 −0.9 −0.4 6.5 −1.7 −1.8 −1.6 3.9 4.9 5.6 6.0 1.9 −0.9 −1.1 −0.1 3.5 3.8 4.9 6.4 5.3 2.6 11.8

Eucla (11) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Balladonia 5.9 10.2 8.4 7.2 4.0 4.4 2.6 4.0 9.4 9.1 2.2 1.5 8.1 4.8 2.8 2.0 5.1 7.6 10.5 3.2 2.6 8.5 7.1 7.9 4.5 11.0 3.5 2.5 10.5Eucla 8.9 11.8 11.6 11.4 9.0 8.8 4.1 8.7 11.2 7.4 5.6 6.0 9.6 8.0 7.5 6.9 3.3 10.3 10.0 9.3 10.7 10.2 9.3 11.2 7.2 11.7 6.2 12.6 11.6 9.3 7.8Eyre 6.8 11.8 11.8 10.7 8.5 11.3 −1.5 6.1 12.9 1.3 5.5 −3.2 11.5 7.7 8.0 −2.6 −1.2 9.9 12.0 10.5 11.4 3.9 −0.3 1.0 8.3 5.3 −1.0 13.2 12.2 9.8 9.8Forrest 7.6 11.9 11.6 11.2 7.3 7.1 4.6 7.1 8.6 8.3 5.1 4.7 7.5 7.3 5.1 4.4 4.0 9.2 6.6 7.8 9.1 8.8 10.0 7.1 4.7 8.9 5.8 11.8 8.0 8.5 7.1

South East (12) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bulga Downs 8.5 10.5 7.0 4.2 5.2 4.3 6.0 6.5 9.5 9.6 7.5 9.0 7.2 4.4 5.2 6.7 8.6 9.5 8.0 7.7 8.0 7.0 8.8 8.5 7.2 9.5 10.2 15.0 13.5 13.1 18.0Kalgoorlie-Boulder Airport 7.8 −0.1 5 9.6 6.5 4.5 8.4 4.8 7.4 8.7 10.1 8.7 4.3 6.2 8.2 3.8 4.5 4.5 7.5 8.4 5.3 5.1 6.4 5.5 7.2 9.1 11.2 9.8 14.2 11.1 8.6 9.0 14.6Laverton Aero 9.1 11.5 8.0 5.9 3.4 5.3 7.3 9.3 7.7 8.0 7.8 9.6 11.8 6.2 6.5 8.6 8.9 9.2 8.8 6.8 7.3 7.3 8.4 9.9 12.4 12.1 16.1 12.8 10.9 10.2 16.1Leinster Aero 9.2 12.1 7.6 5.7 3.7 5.5 6.7 6.2 10.3 7.8 8.2 10.3 9.9 6.6 6.6 7.4 8.8 9.0 8.1 7.5 7.8 7.1 8.3 9.1 11.7 10.6 15.3 15.6 14.2 12.6 16.3Leonora 9.1 −1.0 2 11.1 7.6 6.2 5.0 6.6 7.7 7.2 10.1 7.0 7.4 9.1 9.5 5.9 5.4 9.5 10.6 8.9 7.2 6.8 7.8 6.2 7.8 8.4 11.2 12.9 15.5 14.1 13.0 11.0 14.8Norseman 9.0 2.5 1.2 7.4 9.9 8.6 1.0 0.0 3.2 7.4 7.5 7.4 3.2 4.5 4.0 4.7 5.5 11.0 8.6 8.4 11.0 5.6 6.5 13.5Salmon Gums Res.Stn. 2.3 7.8 −1.6 1.1 1.9 0.1 0.0 9.6 7.3 8.2 −0.2 −2.4 1.9 3.8 −2.3 −1.6 −1.5 −0.7 4.1 −2.5 −3.1 1.8 2.6 2.0 8.6 2.6 1.8 8.0 −0.4 3.8 8.4Southern Cross Airfield 5.1 9.0 3.6 3.4 1.1 1.4 3.6 3.4 7.0 8.7 0.5 0.5 4.2 −2.2 0.3 4.9 7.7 8.1 4.3 4.2 5.4 3.6 4.6 3.2 5.8 5.9 5.9 10.5 7.9 9.8 16.6Yeelirrie 7.1 11.7 8.3 4.3 2.5 3.5 4.6 5.5 9.4 7.0 5.0 7.0 7.8 5.5 5.9 4.5 6.0 8.3 5.2 5.5 4.7 4.6 4.6 5.4 6.2 7.6 14.5 14.7 13.7 13.5

North East (13) Mean Anom Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Balgo Hills 17.1 15.4 16.7 18.4 12.1 13.8 16.7 17.4 20.9 23.4 19.5 20.3 20.2 20.6 19.9 15.0 15.0 14.7 14.2 10.8 10.6 12.6 14.0 16.8 19.0 17.9 19.5 19.3 19.8 20.5 18.5Carnegie 10.4 14.2 12.3 7.2 3.6 5.6 10.7 14.4 11.8 11.5 8.7 13.2 14.1 9.2 8.2 11.6 8.3 10.1 8.2 8.3 8.4 9.1 9.4 9.6 8.7 8.7 12.3 12.5 15.4 13.6 13.2Giles Meteorological Office 11.4 −1.2 3 19.1 15.7 11.6 6.7 5.3 10.1 14.3 13.8 14.2 12.9 14.5 14.3 11.8 9.0 11.3 11.1 10.5 8.6 6.5 6.7 6.7 7.7 8.4 9.8 10.3 15.6 14.4 14.8 12.5 15.0Telfer Aero 15.7 19.1 18.7 12.4 9.5 10.9 11.9 17.0 14.8 19.9 17.0 20.6 17.1 18.2 17.4 12.8 14.0 15.6 11.5 13.7 13.1 12.3 12.6 13.7 13.8 19.1 18.6 19.3 18.2 20.2 18.9Warburton Airfield 11.0 12.4 15.6 8.5 4.4 5.9 10.6 12.9 13.6 9.6 9.5 13.6 13.2 8.9 8.5 11.9 12.2 9.3 9.1 6.8 8.6 8.7 9.5 11.1 11.2 9.3 16.0 14.3 16.4 12.6 16.1Wiluna 8.3 12.3 9.2 4.8 4.0 3.4 3.0 7.0 10.0 7.5 6.5 6.4 5.8 5.5 7.5 9.0 9.1 8.6 6.0 3.5 6.5 9.0 7.2 8.5 9.3 10.0 11.8 13.7 15.4 14.6 14.0


page 18

Daily and total rainfall for September 2010Total is the total precipitation for September 2010; a missing total indicates there is concern about the quality of some of the daily values.Avg is the long-term average total precipitation for September. Decile is the decile rank of total precipitation for September 2010 in theclimate record of other September totals; “L” indicates this is the lowest on record, and “H” it is the highest on record. Long-term averageand decile rank are only shown if there are sufficient years of climate record available. Reports of zero precipitation are shown as “· ”. Whena reading was accumulated over more than one day, “»” is shown on the days that are part of the accumulation.

North Kimberley (01) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Doongan 40.0 · · · · · · · · · · · · · · · · 1.0 · 1.0 · · · · · 7.0 · · 25.5 5.5 ·Kalumburu · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Kuri Bay 0.4 · · · · · · · · · · · · · · · · · · · · · · · 0.4 · · · · · ·Mount Elizabeth 38.5 · · · · · · 8.0 16.8 · · · · 7.0 1.3 5.0 0.4 · · · · · · · · · · · · · ·Theda 1.2 1.0 0.2 ·Wyndham 3.6 · · · · · · 0.6 · · · · · · · 3.0 · · · · · · · · · · · · · · ·

East Kimberley (02) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Argyle Aerodrome 1.8 · · · · · · · · · · · · 0.6 · · 1.2 · · · · · · · · · · · · · ·Halls Creek Airport 34.8 6.1 10 · · · · · · 19.6 · · · · · · · 0.2 1.2 13.8 · · · · · · · · · · · · ·Kununurra Aero 0.8 · · · · · · · · · · · · · · · 0.6 · · · · · · · · · · · 0.2 · ·Margaret River Station 22.2 4.6 10 · · · · · · 1.4 14.4 · · · · · 4.4 2.0 · · · · · · · · · · · · · · ·Sturt Creek 13.0 13.0Warmun 30.7 5.6 10 · · · · · · 30.0 0.2 · · · · · · 0.1 · 0.4 · · · · · · · · · · · · ·

West Kimberley (03) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Bidyadanga 9.2 · · · · · · · · · · · · · 5.2 · 4.0 · · · · · · · · · · · · · ·Broome Airport 4.4 1.7 10 0.2 · · · · · · · · · · · · 0.4 3.8 · · · · · · · · · · · · · · ·Curtin Aero 1.8 · · · · · · · · · · · · · 1.0 0.8 · · · · · · · · · · · · · · ·Cygnet Bay 0.4 · · · · · · · · · · · · · 0.4 · · · · · · · · · · · · · · · ·Dampier Downs 25.0 · · · · · · · · · · · · · · 22.0 3.0 · · · · · · · · · · · · · ·Derby Aero 16.6 · · · · · · · · · · · · · 16.2 0.4 · · · · · · · · · · · · · · ·Fitzroy Crossing Aero 3.0 · · · · · · · · · · · · · 0.6 · 2.2 0.2 · · · · · · · · · · · · ·

De Grey (04) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Karratha Aero 20.8 · · · · · · · · 1.2 3.0 0.6 0.6 · · 15.4 · · · · · · · · · · · · · · ·Mandora 1.4 · · · · · · · · · · · · · · · · · · · · · ·Marble Bar 18.0 · · · · · · · · · 1.8 · 4.8 · · 8.6 2.8 · · · · · · · · · · · · · ·Pardoo Station 23.3 · · · · · · · · · · · 2.3 · · 19.8 1.2 · · · · · · · · · · · · · ·Port Hedland Airport 8.6 0.9 10 · · · · · · · · · » » » 4.0 » 4.6 · · · · · · · · · · · · · · ·Roebourne 27.2 · · · · · · · · 3.8 3.8 2.8 2.2 · · 14.6 · · · · · · · · · · · · · · ·

Fortescue (05) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Dampier Salt 17.3 · · · · · · · · 1.2 1.4 1.2 1.0 · · 12.4 0.1 · · · · · · · · · · · · · ·Learmonth Airport · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Mardie 11.2 1.5 H · · · · · · · · · · · 3.2 0.2 0.8 7.0 · · · · · · · · · · · · · · ·Millstream 33.1 · · · · · · · · · 0.6 0.1 16.6 · 0.8 14.8 0.2 · · · · · · · · · · · · · ·Onslow 12.4 · · · · · · · · · 0.2 7.2 1.2 · · 3.8 · · · · · · · · · · · · · · ·Pannawonica 13.8 · · · · · · · · · · · 2.0 · 4.8 7.0 · · · · · · · · · · · · · · ·Tom Price · · · · · · · · · · 3.8 · · · · · · · · · · · · · · ·

West Gascoyne (06) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Carnarvon Airport 4.6 5.8 6 0.2 · · · · · · 3.4 · · · · · · · · · · 1.0 · · · · · · · · · · ·Denham 6.6 4.6 · · · · · · 0.8 · · · 1.2 · · · · · · · · · · · · · · · · · ·Emu Creek Station 0.2 0.2 · · · · · · · · · · · · · · · · · · · · · · · · · ·Gascoyne Junction 7.6 7.6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Hamelin Station 6.0 6.0 · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Murchison 12.8 12.8 · · · · · · · · · · · · · · · · · · · · · · · · · · ·

East Gascoyne (07) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Mininer 9.2 8.4 0.8Mount Phillip 4.0 4.0 · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Mount Vernon 4.0 3.4 9 · · · · · · · · · · 4.0 · · · · · · · · · · · · · · · · · · ·Neds Creek 1.2Newman Aero 44.6 · · · · · · · · · · 12.8 26.4 · · 5.4 · · · · · · · · · · · · · · ·Paraburdoo Aero 28.4 · · · · · · · · · · 22.2 5.8 · · 0.4 · · · · · · · · · · · · · · ·

Murchison (07A) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Boolardy 16.2Cue 21.8 7.8 10 17.8 4.0 · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Meekatharra Airport 24.6 6.0 10 23.8 0.4 » » » 0.4 · · · · · · · · · · · · · · · · · · · · · · · ·Mount Magnet Aero 21.4 13.4 7.8 0.2 · · · · · · · · · · · · · · · · · · · · · · · · · · ·Paynes Find 20.8 10.6 8.8 · · · · · 0.2 · 0.4 · 0.8 · · · · · · · · · · · · · · · · · ·

North Coast (08) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Ajana 3.0 ·Barberton 24.8 38 4 18.0 0.2 · · · · · 3.2 0.6 · · 2.8 · · · · · · · · · · · · · · · · · ·Canna 11.8 20 4 8.4 0.8 · · · · · 2.6 · · · · · · · · · · · · · · · · · · · · · ·Carnamah 10.9 23 2 3.6 2.6 · · · · · 1.8 · 1.6 · 0.9 0.4 · · · · · · · · · · · · · · · · ·Coorow 6.2 3.0Dalwallinu Comparison 38.3 22 10 36.4 0.7 0.2 · · · · 0.2 0.2 0.3 » 0.3 · · · · · · · · · · · · · · · · · ·Eneabba 11.5 3.0 · · · · · · 3.4 2.3 0.5 · » 2.3 · · · · · · · · · · · · · · · · ·Geraldton Airport 5.4 32 L 0.2 0.8 · · · · · 2.8 0.6 0.2 · 0.2 0.4 · · · · · · · · · · · · · 0.2 · · ·Kalbarri 19.2 4.0 0.6 · · · · · 14.0 0.2 · · 0.2 0.2 · · · · · · · · · · · · · · · · ·Kondut 17.2 13.2 · · · · · · 1.8 0.4 · · 1.8 · · · · · · · · · · · · · · · · · ·Latham 23.2 15.6 4.0 · · · · · 1.8 · 1.4 · · 0.4 · · · · · · · · · · · · · · · · ·Miling 25.5 24 7 22.0 · · · · · · 2.5 · 1.0 · · · · · · · · · · · · · · · · · · · ·Mingenew 4.5 29 1 0.6 0.1 · · · · · 3.4 · · » » 0.4 · · · · · · · · · · · · · · · · ·Moora West 28.8 22.4 0.2 · · · 0.2 · 1.8 1.0 0.2 0.2 2.0 0.6 · 0.2 · · · · · · · · · · · · · · ·Morawa Airport 8.8 6.2 1.0 · · · · · 0.8 · · · · 0.8 · · · · · · · · · · · · · · · · ·Mullewa 5.6 2.2 0.4 · · · · · 2.2 · 0.8 · · · · · · · · · · · · · · · · · · · ·Nabawa 12.2 33 2 1.0 0.2 · · · · · 9.0 · · » » 2.0 · · · · · · · · · · · · · · · · ·Northampton 10.6 31 2 0.4 · · · · · · 8.6 · 0.6 · » 1.0 · · · · · · · · · · · · · · · · ·Perenjori 19 14.7 1.0 0.3Three Springs 11.8 7.0 2.0 0.6 0.8 1.4Wongan Hills 10.0 28 2 3.6 · · · · · · 3.2 1.6 0.2 · 1.4 · · · · · · · · · · · · · · · · · ·


page 19

Daily and total rainfall for September 2010Total is the total precipitation for September 2010; a missing total indicates there is concern about the quality of some of the daily values.Avg is the long-term average total precipitation for September. Decile is the decile rank of total precipitation for September 2010 in theclimate record of other September totals; “L” indicates this is the lowest on record, and “H” it is the highest on record. Long-term averageand decile rank are only shown if there are sufficient years of climate record available. Reports of zero precipitation are shown as “· ”. Whena reading was accumulated over more than one day, “»” is shown on the days that are part of the accumulation.

Central Coast (09) Total Avg Decile 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30Armadale 35.4 72 2 10.0 · · · · · · 11.0 9.4 · » » 5.0 · · · · · · · · · · · · · · · · ·Badgingarra Research Stn 29.4 16.0 · · · · 0.2 · 6.6 2.8 0.6 · 2.8 0.2 · · · · · · · · · · · 0.2 · · · · ·Bickley 33.4 1.6 0.2 · · · · · 17.8 8.2 · · 5.4 · · · · · · · · · · · · 0.2 · · · · ·Fremantle 45.7 8.1 · · · · 3.0 · 9.6 9.6 · · · 15.4 · · · · · · · · · · · · · · · · ·Gingin Aero 41.0 21.0 · · · · · · 8.2 6.6 · · 4.8 0.2 · · · · · · · · · · · 0.2 · · · · ·Gosnells City 24.8 2.6 · · 0.2 · · · 12.0 5.8 · · 4.0 0.2 · · · · · · · · · · · · · · · · ·Jandakot Aero 32.4 7.4 · · 0.6 · · · 14.2 3.2 · · 7.0 · · · · · · · · · · · · · · · · · ·Jarrahdale 40.6 115 1 2.2 · · 0.2 · 0.2 · 20.6 10.2 0.2 0.2 6.0 0.2 · 0.4 · · · · · · · · · 0.2 · · · · ·Jurien Bay 9.8 0.1 0.9 · 1.9 · · · 2.1 0.6 0.6 · 3.6 · · · · · · · · · · · · · · · · · ·Karnet 37.8 5.8 · · · · · · 17.0 10.0 · · » 5.0 · · · · · · · · · · · · · · · · ·Kwinana BP Refinery 30.4 69 2 2.0 · · 2.4 0.2 · · 11.6 9.6 · · 4.4 · · · · · · · · · · · · 0.2 · · · · ·Lancelin 8.0 · · · · · · · 5.0 1.0 · · 2.0 · · · · · · · · · · · · · · · · · ·Leeman 6.7 3.4 · · · · · · 0.8 1.5 · · 1.0 · · · · · · · · · · · · · · · · · ·Medina Resea

Documents

Monthly Weather Review Western Australia September 2010 · This means a significant fraction of the rain may have occurred on the previous calendar day. Monthly rainfall is for the