Thursday, 1 October 2015 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in September 2015: Fourth driest September

WA saw its fourth driest September when averaged across the State as a whole, with very much below average rainfall also reported in the southwest. The state-wide mean maximum temperatures was the eighth highest in September on record, whilst mean minimum temperatures were near average.

• Fourth driest September for WA; seventh driest for the South West Land Division
• Eighth highest mean maximum temperature for WA; third highest for southwest WA
• Near average mean minimum temperature for WA; below average for southwest WA

Below to very-much-below average rainfall was reported through large parts of WA in September, particularly in central and southwest regions. For WA as a whole, September 2015  was the fourth driest September on record, and the driest September for 76 years, since 1939. For the South West Land Division (SWLD) as a whole, it was the seventh driest September on record, and the driest for five years, since 2010. A few sites in the northeast SWLD and neighbouring Gascoyne and Goldfields recorded their lowest total September rainfall on record, whilst many sites, particularly in the SWLD, recorded their lowest September rainfall for at least 20 years. Rainfall was mainly recorded in the early part of month and was mostly confined to southern parts of the State as a result of the passage of cold fronts.

Mean maximum temperatures were above to very much above average in western and northern WA in September 2015, with the remainder of the State near average. For WA as a whole, the mean maximum temperature was eighth highest since comparable records commenced in 1910. Last year (2014) WA recorded its warmest September on record. When averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), September was the third warmest September on record, and the warmest September for 28 years since 1987. Many sites in the west Kimberley, Pilbara, Gascoyne, and western parts of the SWLD experienced their warmest September on record. Southerly winds in the wake of a cold front resulted in a cold day with daily maxima in the low teens in southern parts of the SWLD on the 1st, and Newdegate Research Station recorded its equal lowest maximum temperature in its 20 years of record. Western parts of the State saw very warm to hot days on the 9th, 23rd and 24th, with daily maxima in the low to mid-thirties in the Lower West and Central West grading to the high-thirties in the Gascoyne. A few sites broke their highest September temperature on record, including Carnarvon Airport, which recorded a maximum of 38.8 °C, its highest September maximum in 70 years of record, and the highest September temperature registered in the town since the record of 38.9 °C was set at the Post Office on 24 September 1936. A very hot day with a daily maximum temperature of 40.5 °C and 40.2 °C was reported at West Roebuck and Derby Aerodrome in the west Kimberley on the 17th respectively, which was the first occurrence of a 40 °C day this spring in WA and the country. Daily maxima in low forties were again observed in the Kimberley and Pilbara coast on the last day of September, and 40.0 °C at Onslow Airport was its first ever 40 °C day in September in its 50 years of temperature recording.

Mean minimum temperatures were above to very much above average in much of the Pilbara, Gascoyne, and Eucla in September. Below average mean minimum temperatures were confined to the Kimberley and parts of southwest WA and the southern Goldfields. When averaged across the State, the mean minimum temperature was near average, but was below average in the Lower Southwest region. Western parts of the SWLD experienced unseasonally warm nights on the 10th and 24th, with daily minima in the mid-to-high teens, and a number of sites recorded their warmest September night on record, including Cape Leeuwin and Donnybrook with over 100 years of temperature recording.

Extremes Maps Records Summaries Important notes the top

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Extremes in September 2015
Hottest day	41.4 °C at West Roebuck on the 18th
Warmest days on average	37.5 °C at Wyndham Aero
Coolest days on average	17.6 °C at Shannon
Coldest day	10.7 °C at Rocky Gully on the 1st
Coldest night	-2.7 °C at Eyre on the 8th
Coolest nights on average	2.5 °C at York
Warmest nights on average	25.4 °C at Browse Island 21.3 °C at Argyle Aerodrome
Warmest night	26.9 °C at Argyle Aerodrome on the 1st
Warmest on average overall	28.5 °C at Argyle Aerodrome
Coolest on average overall	11.7 °C at Newdegate Research Station
Wettest overall	101.8 mm at Karri Valley Resort
Wettest day	38.4 mm at Wagerup Refinery on the 12th
Strongest wind gust	96 km/h at Cape Leeuwin on the 4th

Extremes Maps Records Summaries Important notes the top

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Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Click on a map to show it full size in a pop-up window

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Record lowest September total rainfall
	New record (mm)	Old record		Years of record	Average for September
Westonia	2.4	3.5	in 1967	101	23.6
Kondut	5.3	6.4	in 1977	84	24.5
Mount Walker	4.2	4.4	in 1980	58	26.8
Swanara	5.4	6.1	in 1980	54	27.0
Pickering Brook	38.6	40.5	in 2010	38	121.2
Mount Gibson	1.0	3.0	in 1989	34	23.8
Anro	8.8	9.6	in 1987	33	32.3
Nunile	9.2	10.0	in 2010	25	46.0
Laverton Aero	0.0	0.4	in 1994	22	8.0
Koolyanobbing	1.6	3.1	in 1967	21	19.9
Mount Magnet Aero	0.2	2.2	in 2008	21	9.0

Lowest September total rainfall for at least 20 years
	Observed (mm)	Most recent lower		Average for September
Nungarin	1.8	0.0	in 1914	23.4
Belka	3.4	2.5	in 1939	23.6
Boyup Brook	13.4	8.9	in 1939	64.1
Colorado	6.8	5.8	in 1944*	30.5
Wialki	2.8	2.5	in 1944*	21.7
Bolgart	8.6	6.1	in 1939*	38.1
Ballidu	4.2	2.7	in 1956	25.4
Highfields	5.1	4.9	in 1959	25.4
Minaru	5.0	2.5	in 1956*	21.3
Coorow	5.5	4.1	in 1959*	30.0
Mindalla	3.7	0.0	in 1957*	26.8
Spring Valley	5.0	4.3	in 1967*	28.0
Cadoux	5.0	3.8	in 1967*	24.3
Gabbin	5.2	4.3	in 1957*	23.7
Wialki South	5.2	0.0	in 1967*	20.9
Badgingarra Research Stn	15.0	8.6	in 1974	50.8
Cape Leeuwin	43.6	31.7	in 1974	90.9
Paynes Find	0.6	0.0	in 1967*	14.5
Berkshire Valley	9.0	8.3	in 1977	35.9
Canna	1.4	=1.4	in 1977	22.7
Coolangatta	2.8	2.2	in 1977	24.3
Ejanding	1.8	=1.8	in 1977	22.0
Ogilvie	4.4	1.4	in 1977	27.9
Trayning	3.0	2.2	in 1977	23.2
Wattening	11.4	10.6	in 1977	35.9
Yandanooka	4.6	2.8	in 1977	32.6
Yuna	6.7	2.6	in 1977	24.2
Cowcowing	4.2	2.6	in 1977*	22.0
Sandsprings	8.2	2.9	in 1977*	39.6
Willigulli North	13.0	4.6	in 1979	32.8
Wongan Hills	8.4	7.8	in 1979	29.8
Bowgada	1.4	0.8	in 1980	24.6
Codg Codgen	5.8	5.2	in 1980	25.1
Goodlands	4.6	2.2	in 1980	21.5
Lake Carmody	6.0	5.0	in 1980	25.9
Merredin	7.2	5.4	in 1980	25.8
Mullewa	2.5	1.9	in 1980	21.8
Nangeenan	6.2	2.2	in 1980	24.6
Noongaar	3.2	2.4	in 1980	23.0
South Holmwood	6.0	4.8	in 1979*	24.8
Yorkrakine	5.1	3.4	in 1980	23.2
Barberton	16.0	15.0	in 1981	38.9
Bullfinch	4.4	3.6	in 1981	19.4
New Norcia	14.8	7.0	in 1977*	47.8
Northam	14.9	14.2	in 1981	37.4
Wyalkatchem	4.0	3.2	in 1977*	23.7
Seven Oaks	2.2	2.0	in 1980*	21.4
Doodlakine	4.2	3.9	in 1980*	22.5
Perenjori	2.8	2.7	in 1980*	19.7
Cocos Island Airport	18.0	2.8	in 1986	93.6
Lake Nammen	27.2	14.8	in 1981*	56.7
Riverside	5.0	4.6	in 1987*	17.2
Balladonia	1.3	1.0	in 1989	19.9
Gleneva	8.2	7.5	in 1987*	24.5
Jourerdine	7.2	4.8	in 1989	20.1
Kellerberrin	8.5	4.4	in 1989	26.2
Latham	7.0	5.6	in 1989	19.4
Kalgoorlie-Boulder Airport	2.4	0.8	in 1989*	14.2
Karara	1.6	1.0	in 1939*	21.5
Kalbarri	5.4	2.8	in 1994	24.2
Useless Loop	2.6	0.4	in 1994	9.7

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.

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Record highest September temperature
	New record (°C)		Old record		Years of record	Average for September
Carnarvon Airport	38.8	on the 23rd	38.4	on the 29th in 1967	70	24.4
Onslow Airport	40.0	on the 30th	39.8	on the 27th in 2010	50	30.0
Lancelin	32.5	on the 9th	32.4	on the 18th in 1988	48	20.5
Denham	37.0	on the 23rd	36.0	on the 28th in 1990	27	23.8
Windy Harbour	29.4	on the 24th	= 29.4	on the 20th in 2014	27	17.7

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Record lowest September daily maximum temperature
	New record (°C)		Old record		Years of record	Average for September
Newdegate Research Station	11.0	on the 1st	= 11.0	on the 9th in 2005	20	18.8

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Record highest September mean daily maximum temperature
	New record (°C)	Old record		Years of record	Average for September
Cape Leeuwin	18.6	= 18.6	in 2014	118	17.1
Dwellingup	19.8	19.6	in 2010	77	17.3
Broome Airport	34.6	34.2	in 1989	76	31.8
Pemberton	19.2	19.1	in 1946	71	16.7
Perth Airport	22.8	22.3	in 1987	71	20.2
Carnarvon Airport	28.4	27.3	in 1987	69	24.4
Pearce RAAF	22.7	22.2	in 2014	54	20.0
Bidyadanga	35.5	35.3	in 2008	53	32.9
Onslow Airport	32.8	32.7	in 2000	49	30.0
Karnet	19.9	19.5	in 2010	48	17.5
Beverley	22.9	22.5	in 2014	45	20.3
Pingelly	20.7	20.3	in 2014	43	18.4
Emu Creek Station	33.3	32.9	in 1981	42	30.6
Kalbarri	26.6	26.1	in 2006	41	24.0
Learmonth Airport	31.7	31.4	in 1981	40	29.3
Wagin	20.1	= 20.1	in 2014	40	18.2
Jarrahwood	19.9	19.8	in 2014	33	18.2
Denham	26.4	25.8	in 2014	26	23.8
Jandakot Aero	22.2	22.0	in 2010	25	20.0
Murchison	28.8	= 28.8	in 1994	25	26.2
Karratha Aero	32.9	32.5	in 2014	22	30.7
Swanbourne	22.3	21.9	in 2014	22	19.9
Bickley	19.8	19.3	in 1994	21	17.5

Highest September mean daily maximum temperature for at least 20 years
	Observed (°C)	Most recent higher		Average for September
Narrogin	20.5	21.1	in 1957*	17.7
Mardie	34.7	34.8	in 1987	32.2
Brookton	21.6	22.0	in 1987*	19.2
Christmas Island Aero	27.0	=27.0	in 1988	26.2
Northam	22.7	22.9	in 1994	20.5

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.

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Record highest September daily minimum temperature
	New record (°C)		Old record		Years of record	Average for September
Cape Leeuwin	18.2	on the 24th	17.8	on the 3rd in 1959	109	11.8
Donnybrook	17.5	on the 10th	16.9	on the 27th in 1961	106	7.1
Cape Naturaliste	17.5	on the 24th	16.7	on the 15th in 1987	59	10.4
Manjimup	15.5	on the 10th	15.0	on the 21st in 2014	56	7.2
Eneabba	18.5	on the 24th	18.3	on the 15th in 1997	42	9.7
Wagin	16.3	on the 10th	13.8	on the 21st in 1977	41	6.3
Jarrahwood	15.0	on the 10th	= 15.0	on the 6th in 1981	34	6.1
Rottnest Island	18.8	on the 24th	18.6	on the 30th in 2010	26	12.9
Gosnells City	19.6	on the 10th	18.5	on the 30th in 2010	23	10.2
Swanbourne	19.0	on the 10th	17.2	on the 1st in 2013	23	11.0
Bickley	16.1	on the 10th	15.0	on the 27th in 2000	22	8.3
Bunbury	18.1	on the 10th	15.7	on the 1st in 2013	20	8.6
Paraburdoo Aero	23.7	on the 20th	22.5	on the 29th in 2010	20	13.5
Rocky Gully	16.2	on the 10th	13.6	on the 21st in 2014	20	7.2

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Record lowest September temperature
	New record (°C)		Old record		Years of record	Average for September
Laverton Aero	1.3	on the 2nd	1.5	on the 1st in 1993	24	10.5
Leinster Aero	1.4	on the 2nd	2.3	on the 12th in 2004	22	10.8

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Record lowest September mean daily minimum temperature
	New record (°C)	Old record		Years of record	Average for September
Curtin Aero	16.1	16.2	in 2011	23	18.3

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Record highest September mean temperature
	New record (°C)	Old record		Years of record	Average for September
Onslow Airport	24.9	24.4	in 2007	49	22.7
Karratha Aero	24.9	= 24.9	in 2014	22	23.8

Highest September mean temperature for at least 20 years
	Observed (°C)	Most recent higher		Average for September
Mardie	25.3	25.7	in 1981*	23.3

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.

Extremes Maps Records Summaries Important notes the top

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Summary statistics for September 2015
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for September 2015	Diff from average	Highest for September 2015		Mean for September 2015	Diff from average	Lowest for September 2015		Total for September 2015	Average for September	Rank of September 2015	Fraction of September average
North Kimberley (district 01)
Doongan	34.7	-0.6	36.7	16th	15.3	-2.3	8.5	11th	0	5.6	lowest	0%
Kalumburu	36.3	+0.6	38.8	30th	16.7	-2.4	11.2	11th	0	1.6	v low	0%
Mount Elizabeth	33.8	-0.4	36.2	17th	12.7	-2.1	5.3	11th	0	8.0	lowest	0%
Troughton Island	30.8	+0.5	32.7	25th	24.3	-0.2	22.2	12th	0	0.3	lowest	0%
Truscott	33.7	+0.4	37.1	3rd	20.8	-1.0	18.0	12th	0	0.2	v low	0%
Wyndham Aero	37.5	-0.2	40.0	30th	19.3	-2.3	13.5	27th	0	3.7	lowest	0%
East Kimberley (district 02)
Argyle Aerodrome	35.8	-0.7	38.2	16th	21.3	-1.0	17.0	11th	0	2.5	lowest	0%
Halls Creek Airport	33.8	-0.3	37.2	17th	18.0	-1.0	14.1	11th	0	4.5	lowest	0%
Kununurra Aero	36.8	+0.2	39.0	30th	17.1	-2.9	11.4	28th	0	2.9	lowest	0%
Warmun	36.2	+0.1	39.0	19th	16.9	-2.5	11.5	28th	0	4.4	lowest	0%
West Kimberley (district 03)
Bidyadanga	35.5	+2.6	40.5	18th	17.8	+0.3	12.8	27th	0	1.3	lowest	0%
Broome Airport	34.6	+2.8	39.3	21st	17.2	-1.3	12.9	27th	0.2	1.4	low	14%
Curtin Aero	36.9	+0.3	39.5	17th	16.1	-2.2	11.2	2nd	0	0.2	lowest	0%
Cygnet Bay	33.1	+0.6	35.5	30th			13.2	11th	0	1.3	lowest	0%
Derby Aero	36.5	+1.2	40.2	30th	17.2	-2.2	14.3	2nd	0	1.0	lowest	0%
Fitzroy Crossing Aero	37.2	-0.2	39.8	20th	16.7	-1.9	11.7	11th	0	0.3	v low	0%
De Grey (district 04)
Bedout Island	29.9		34.1	20th	22.1		20.1	5th
Karratha Aero	32.9	+2.2	36.7	20th	17.0	+0.1	13.7	2nd	0	1.3	lowest	0%
Legendre Island	29.3		33.2	19th	20.4		18.0	3rd
Mandora	35.9	+2.2	41.0	30th	15.3	-0.4	8.5	29th	1.0	1.0	v high	100%
Marble Bar	35.4	+0.7	39.0	30th	16.1	-0.6	11.0	3rd	0	4.6	v low	0%
Port Hedland Airport	34.3	+2.0	38.4	21st	16.3	+0.9	12.7	29th	0.2	1.2	average	17%
Roebourne Aero	35.0	+1.8	38.1	20th	14.7	-0.8	11.4	5th	0	2.5	v low	0%
Fortescue (district 05)
Barrow Island Airport	29.5	+2.7	36.0	30th	19.9	+0.4	17.7	15th	1.0	0.8	high	125%
Learmonth Airport	31.7	+2.4	38.2	30th	13.6	-0.2	8.5	3rd	0.4	1.9	average	21%
Mardie	34.7	+2.5	39.1	20th	15.9	+1.5	11.0	2nd	0	1.3	lowest	0%
Onslow Airport	32.8	+2.8	40.0	30th	16.9	+1.5	12.2	3rd	0.4	1.4	average	29%
Wittenoom	32.7	+1.5	36.5	30th	17.0	+0.2	11.5	3rd	0	3.1	lowest	0%
West Gascoyne (district 06)
Carnarvon Airport	28.4	+4.0	38.8	23rd	13.7	-0.2	7.5	3rd	0	5.9	lowest	0%
Denham	26.4	+2.6	37.0	23rd	15.3	+0.4	10.9	2nd	2.4	7.9	low	30%
Emu Creek Station	33.3	+2.7	38.8	30th	14.4	+0.4	7.3	3rd	0	2.1	lowest	0%
Murchison	28.8	+2.6	35.2	28th	10.9	+1.4	3.5	3rd	0	7.7	lowest	0%
Shark Bay Airport	28.7	+2.8	36.7	23rd	12.8	0.0	6.7	3rd	0.6	8.6	v low	7%
East Gascoyne (district 07)
Newman Aero	30.4	-0.1	34.8	30th	12.0	-0.2	7.1	3rd	0	4.1	lowest	0%
Paraburdoo Aero	32.5	+1.1	37.3	30th	15.2	+1.7	8.7	5th	0	3.2	lowest	0%
Murchison (district 07A)
Meekatharra Airport	28.2	+2.5	33.9	28th	12.7	+1.2	5.6	2nd	0	4.6	lowest	0%
Mount Magnet Aero	27.0	+2.4	35.5	28th	11.2	+0.8	3.1	2nd	0.2	9.0	lowest	2%
Paynes Find	26.2	+2.4	33.9	25th	8.1	0.0	1.1	2nd	0.6	14.5	v low	4%
North Coast (district 08)
Dalwallinu	23.2	+2.2	31.6	24th	6.5	-0.4	1.0	2nd	4.4	26.6	v low	17%
Geraldton Airport	25.3		34.5	24th	9.0		3.8	2nd	10.0
Kalbarri	26.6	+2.6	34.0	23rd	11.7	+0.9	5.0	4th	5.4	24.2	v low	22%
Morawa Airport	26.0	+3.0	33.8	24th	8.3	+0.6	1.5	3rd	1.8	24.5	v low	7%
North Island	23.1	+1.0	31.1	23rd	16.5	+0.5	12.0	4th	4.4	21.9	low	20%
Wongan Hills	22.9	+2.2	31.4	24th	7.5	-0.2	1.6	2nd	8.4	29.8	v low	28%
Central Coast (district 09)
Badgingarra Research Stn	22.8	+2.3	31.4	24th	8.3	+0.7	2.3	4th	15.0	50.8	v low	30%
Bickley	19.8	+2.3	28.7	9th	8.3	0.0	2.8	2nd	67.0	126.4	low	53%
Garden Island HSF	19.9	+1.0	30.5	9th	11.9	-0.2	7.0	2nd	37.8	66.1	low	57%
Gingin Aero	22.9	+2.3	31.9	9th	6.9	-0.7	1.0	2nd	37.2	85.0	v low	44%
Gosnells City	22.8	+2.0	32.1	9th	11.0	+0.8	4.4	2nd	51.4	82.7	low	62%
Jandakot Aero	22.2	+2.2	32.0	9th	7.9	-0.4	0.4	2nd	35.6	86.7	v low	41%
Karnet	19.9	+2.4	28.9	9th	6.9	-0.4	1.4	2nd	69.4	134.5	low	52%
Pearce RAAF	22.7	+2.7	31.0	24th	9.1	+0.3	2.8	2nd	32.8	69.5	low	47%
Perth Airport	22.8	+2.6	31.6	9th	9.3	+0.4	1.7	2nd	45.6	73.2	low	62%
Perth Metro	22.5	+2.2	32.1	9th	9.5	-0.1	2.8	2nd	52.0	81.3	low	64%
Rottnest Island	20.0	+1.2	29.1	23rd	13.2	+0.3	8.8	2nd	22.4	59.7	low	38%
Swanbourne	22.3	+2.4	32.5	9th	11.0	0.0	4.8	2nd	35.2	82.2	v low	43%
South Coast (district 09A)
Albany	18.9	+1.6	29.6	24th	10.3	+1.0	7.1	17th	53.1	101.6	v low	52%
Albany Airport	19.1		28.9	24th	8.0		2.4	17th	63.6
Bridgetown	19.0	+1.4	27.4	9th	5.0	-1.1	-0.5	2nd	61.0	92.6	low	66%
Bunbury	19.7	+1.2	27.4	23rd	7.5	-1.1	0.8	2nd	61.2	85.4	low	72%
Busselton Aero	19.2	+0.9	25.2	23rd	6.8	-1.1	1.3	2nd	50.0	79.0	low	63%
Cape Leeuwin	18.6	+1.5	27.6	23rd	12.3	+0.5	8.7	1st	43.6	90.9	v low	48%
Cape Naturaliste	18.7	+1.4	23.1	24th	10.2	-0.2	5.7	2nd	51.6	76.6	low	67%
Collie East	20.2	+1.9	28.8	9th	4.5	-1.3	-1.0	16th	68.0	97.8	low	70%
Donnybrook	20.6	+1.8	29.2	23rd	7.2	+0.1	1.3	2nd	65.0	103.2	low	63%
Dwellingup	19.8	+2.5	29.3	9th	6.3	-0.2	1.0	2nd	68.4	131.7	low	52%
Esperance	20.5	+1.1	29.6	25th	9.5	0.0	4.3	3rd	62.4	61.3	average	102%
Esperance Aero	20.0	+1.1	29.4	25th	8.1	-0.3	3.3	3rd	54.6	57.7	average	95%
Hopetoun North	19.6	-0.7	29.6	24th	7.3	-1.3	1.6	3rd	32.2	51.8	low	62%
Jarrahwood	19.9	+1.7	28.0	23rd	5.2	-0.9	-1.8	2nd	83.8	106.6	average	79%
Mandurah	20.5	+1.5	26.3	22nd	11.6	-0.3	6.6	2nd	31.2	69.5	low	45%
Manjimup	18.8	+2.3	27.6	24th	7.6	+0.4	3.8	2nd	59.0	108.8	low	54%
North Walpole	18.3	+1.0	28.6	24th	9.7	+0.5	6.3	17th	79.0	108.0	average	73%
Pemberton	19.2	+2.5	27.6	24th			3.5	2nd	72.0	130.1	low	55%
Rocky Gully	17.9	+1.4	27.3	24th	7.3	+0.1	1.4	16th	48.0	97.2	low	49%
Shannon	17.6	+1.2	26.2	24th	7.0	-0.4	2.3	21st	75.0	114.6	low	65%
Windy Harbour	18.9	+1.2	29.4	24th	9.6	+0.2	5.1	29th	69.4	113.6	low	61%
Witchcliffe	18.4	+1.0	24.6	23rd	7.5	-1.3	2.7	2nd	78.4	114.3	low	69%
North Central (district 10)
Bencubbin	22.3	+1.3	30.4	28th	7.6	+0.4	0.3	2nd	0	21.9	lowest	0%
Cunderdin Airfield	23.2	+2.4	31.7	24th	4.8	-0.2	-0.5	2nd	6.0	27.4	v low	22%
Merredin			31.0	18th	7.7	+0.9	1.4	2nd	7.2	25.8	v low	28%
Northam	22.7	+2.2	31.7	24th	5.2	-1.7	0.0	2nd	14.9	37.4	low	40%
York	22.6	+2.5	32.0	24th	2.5	-2.5	-2.0	2nd	11.5	39.5	v low	29%
South Central (district 10A)
Beverley	22.9	+2.6	31.4	24th	4.7	-1.2	-1.4	2nd	17.8	36.4	low	49%
Brookton	21.6	+2.4	30.5	24th	5.1	-0.3	-0.5	4th	13.3	38.7	v low	34%
Corrigin	21.6	+2.4	29.9	24th	5.1	-0.7	0.0	4th	14.8	29.8	low	50%
Hyden	22.5	+2.1	30.1	28th	6.0	+0.1	-1.0	2nd	9.5	28.0	low	34%
Jacup	20.8	+2.0	29.1	24th	5.8	-0.5	1.0	6th	11.8	43.9	v low	27%
Katanning	19.1	+1.6	28.5	24th	6.3	+0.1	1.7	7th	25.4	54.9	v low	46%
Lake Grace	20.8	+1.6	28.7	24th	6.6	+0.1	1.0	6th	11.4	28.7	low	40%
Narembeen	22.8	+2.3	30.5	28th	6.3	+0.1	0.0	2nd	9.7	26.0	v low	37%
Narrogin	20.5	+2.8	29.4	24th	5.9	-0.1	0.4	20th	14.8	46.7	v low	32%
Newdegate Research Station	20.0	+1.2	27.6	24th	3.5	-1.5	-1.8	21st	18.2	33.6	low	54%
Ongerup	19.8	+1.9	28.4	24th	6.9	+0.4	1.2	6th	20.0	38.4	low	52%
Pingelly	20.7	+2.3	32.0	24th	6.6	+0.1	1.2	2nd	17.0	41.0	low	41%
Ravensthorpe	20.5	+1.0	28.5	18th	8.2	+0.8	1.0	3rd	28.6	42.1	average	68%
Wagin	20.1	+1.9	28.0	9th	6.5	+0.2	1.5	4th	22.8	41.3	low	55%
Wandering	20.1	+1.8	29.0	24th	3.5	-1.4	-2.2	16th	27.8	61.4	low	45%
Eucla (district 11)
Balladonia	22.9	+0.6	34.7	10th	8.1	+1.3	3.2	21st	1.3	19.9	v low	7%
Eucla	21.5	+0.1	32.6	12th	9.5	+0.3	4.9	15th	14.6	22.4	average	65%
Eyre	22.3	+1.0	34.7	10th	7.8	+0.1	-2.7	8th	16.7	23.9	average	70%
Forrest	24.3	-0.2	34.8	12th	7.1	-1.2	3.0	8th	6.2	16.4	average	38%
Red Rocks Point	20.5	-1.0	32.6	10th	9.9	-0.2	4.8	26th	19.8	29.7	low	67%
South East (district 12)
Bulga Downs	27.1	+1.8	34.8	28th	8.7	-0.3	1.6	2nd
Kalgoorlie-Boulder Airport	23.7	+1.4	32.6	10th	8.2	+0.2	-0.2	2nd	2.4	14.2	low	17%
Laverton Aero	25.7	+1.2	34.1	10th	10.4	-0.1	1.3	2nd	0	8.0	lowest	0%
Leinster Aero	26.5	+0.9	33.6	28th	9.8	-1.0	1.4	2nd	0	4.1	lowest	0%
Leonora Aero	26.1		34.5	10th	10.2		1.8	2nd	0
Munglinup West	20.9	+0.9	29.2	25th	7.2	-0.2	2.8	3rd	41.6	39.5	average	105%
Norseman Aero	23.0	+0.6	32.6	10th	5.3	-1.1	-0.7	14th	12.2	23.1	average	53%
Salmon Gums Res.Stn.	21.1	+0.7	31.1	25th	4.8	-1.0	-2.0	21st	18.8	32.0	low	59%
Southern Cross Airfield	23.1	+1.5	32.7	25th	5.1	-0.4	-1.2	2nd	2.8	21.9	v low	13%
Yeelirrie	27.2	+1.3	34.1	10th	6.6	-1.3	-1.0	2nd	0	4.7	lowest	0%
North East (district 13)
Balgo Hills	33.7	-0.2	37.1	16th	16.8	-1.9	12.9	15th	0	2.9	lowest	0%
Carnegie	28.6	-0.1	34.6	29th	10.7	-0.9	4.9	2nd	0	3.7	lowest	0%
Giles Meteorological Office	27.7	+0.2	33.7	30th	11.6	-1.4	6.4	2nd	0.4	10.6	low	4%
Telfer Aero	33.5	+0.7	38.0	30th	16.0	-0.5	11.8	3rd	0	2.3	lowest	0%
Warburton Airfield	27.9	-0.1	35.2	30th	11.8	+0.5	5.2	2nd	0	5.5	lowest	0%
Offshore Islands (district 200)
Adele Island	29.4		32.0	30th	22.2		19.9	28th
Browse Island	28.9		30.7	22nd	25.4		24.2	3rd
Christmas Island Aero	27.0	+0.8	28.0	28th	22.6	+0.4	21.9	10th	0.6	41.6	v low	1%
Cocos Island Airport	28.6	+0.4	29.3	24th	24.7	+0.8	22.0	15th	18.0	93.6	low	19%
Note: Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225). Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992. Observations for “Rottnest Island” are taken from the current site at Rottnest Island (Bureau number 009193). Comparisons are made against combined data from the current site(which opened in 1995) and the previous site at Rottnest Island Lighthouse (009038),which ran from 1879 to 1994.

Extremes Maps Records Summaries Important notes the top

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