Tuesday, 4 January 2011 - Annual Climate Summary for Western Australia - Product code IDCKGC21R0

Western Australia in 2010: A very dry year in southwest Western Australia

• Rainfall: Near average for WA as a whole; driest year on record for southwest WA.
• Maximum temperature: Ninth warmest on record for WA; second warmest for southwest WA.
• Minimum temperature: Third warmest for WA; near average for southwest WA.

Details Extremes Records Summaries Important notes the top

Rainfall

Annual: Annual rainfall in 2010 in WA was above average to very much above average in parts of the Kimberley, northern and eastern Interior and eastern Eucla. Eucla in the southeast of the state recorded its wettest year in 121 years of record. The rainfall was associated with tropical weather systems, with persistent cloud bands that brought significant rain through the dry season to northern and eastern WA. Also, after a very dry year, parts of the Gascoyne region received record rainfall in December to register very much above average rainfall for 2010.

In marked contrast, the Southwest Land Division (SWLD) and adjacent parts of neighbouring districts recorded below average rainfall. Averaged across the SWLD it was the driest year since comparable records commenced in 1900, whilst the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) also experienced its driest year on record by a significant margin, the driest southern wet season (April to October), driest winter (June to August), and driest spring (September to November). Many sites in the Southwest, Lower West, Great Southern and Central Wheat Belt observed approximately half, or less, of the normal average annual rainfall, and the driest year on record.

The statewide annual mean total was 334 mm, which is close to the average of 341 mm.

January: Rainfall during January 2010 over WA was close to the long-term mean. A tropical low that moved south near the WA/NT border at the beginning of the month brought above average rainfall to eastern parts of the state, whilst Tropical Cyclone Magda toward the end of the month brought heavy falls to the west Kimberley. Persistent strong high pressure systems to the south of the state prevented any meaningful rainfall for large parts of western and inland WA in January. In particular, there was a weaker than normal level of thunderstorm activity near the SWLD west coast and many stations in this region recorded no rainfall for the month.

February: Rainfall for February 2010 was below average with an unusually quiet monsoon season and no tropical cyclones in the WA region. This lack of monsoonal activity also had an effect on the remainder of the state, with few opportunities for tropical moisture to venture into western parts resulting in below average rainfall conditions in west coast districts. Severe thunderstorms causing damage and heavy rainfall in the south of the SWLD on the 9th led to small pockets of above average rainfall.

Autumn: Below average rainfall continued in the SWLD, as well as in the Pilbara and large parts of the Gascoyne in autumn. The first significant rainfall for the year for many locations in the southern Gascoyne and western SWLD came on 21 and 22 March 2010 as low level convergence into a surface trough combined with a mid-level trough off the WA west coast to generate showers and storms in the region. Severe thunderstorms occurred in Perth and southwest WA on the afternoon of 22 March and caused significant damage, being considered as one of the worst storms in Perth's history. For more details of the severe thunderstorms in Perth, see notable events below.

Winter: Averaged over the state as a whole, rainfall during winter 2010 was near average; however, for the Lower Southwest, very dry conditions that had been present for much of the year continued and the region posted its driest winter since comparable records commenced in 1900 as a result of the third driest June on record, a below average July, and the sixth driest August on record. The SWLD recorded its 2nd driest winter on record, only eclipsed by the drier winter of 2006. In contrast, above to very much above average winter rainfall was recorded over most of the Kimberley and adjacent Pilbara and Interior, the result of above average July and August rainfall. Cloudbands in mid-June and early July produced unusually heavy falls in the Pilbara and Kimberley with several daily winter rainfall records broken.

Spring: WA observed its 5th highest spring rainfall as a result of above average rainfall over most of WA, apart from the SWLD. Above average September and October rainfall with significant cloudbands in September, as well as thunderstorm activity through the spring months, contributed to the very much above average spring rainfall to much of WA. In stark contrast, the SWLD continued to experience a very dry year with very much below average rainfall across most of the region. The Lower Southwest recorded its driest spring on record, and the SWLD its 5th driest spring on record.

December: Most of western WA recorded above average rainfall during December as a result of an early monsoon onset, and the passage of a tropical low near the WA west coast during the middle of the month. The low brought falls of over 300 mm to parts of the west Gascoyne region, resulting in significant flooding in the Gascoyne River and inundation of parts of Carnarvon.

Maximum temperature

Annual: Maximum temperatures in WA during 2010 were above average to very much above average for the western half of the state, with areas of hottest on record in western parts of the SWLD, including Perth, as well as in the west Kimberley. In contrast, eastern parts of the Kimberley and Interior were below average in terms of daytime maximum temperatures. Averaged across the state as a whole, the annual mean maximum temperature was 0.70 °C above the 1961/90 average, and the 9th warmest year since records commenced in 1910. The Lower Southwest observed its 2nd warmest year on record, 1.23 °C above the 1961/90 mean. The west Pilbara experienced a very hot start to the year with Onslow recording a maximum temperature of 49.2 °C on 1 January 2010, the highest temperature recorded in WA in 2010 and an equal record highest temperature at Onslow.

January: Very hot daytime temperatures were observed over much of the state during January 2010. Several daily maximum temperature records for January were broken or equalled in the Pilbara on the first two days of the month, with maxima near to or exceeding 49 °C. In the south, a near stationary trough off the west coast on 6 January combined with a high in the Bight to direct hot northeasterly winds over the SWLD with several sites in eastern parts of the SWLD having their hottest day on record. Hopetoun North, in the Southeast Coastal district, recorded a maximum temperature of 48.0 °C. The event was marked by "catastrophic" high fire danger ratings in the region and a notable number of heat related bird deaths.

February: Above average to very much above average temperatures continued in much of WA during February 2010, with the daytime maximum for the state ranking as the 4th hottest for February. Inland parts of WA generally saw the greatest departures from normal, with little cloud or rainfall to moderate temperatures during the month.

Autumn: Above average to very much above average mean maximum temperatures were recorded in almost all of WA in autumn 2010, and the season ranked as the 6th hottest on record.

Winter: Winter mean maximum temperatures were near average over much of central and southern WA, however, above average to very much above average mean maximum temperatures occurred in the north and west Kimberley, the Pilbara, north and west Gascoyne, and western parts of the SWLD, with Roebourne and Onslow in the Pilbara experiencing their warmest winter on record.

Spring: Spring mean maximum temperatures were above average to very much above average over western WA, with the Lower Southwest observing its warmest spring on record. In contrast, mean maximum temperatures for spring 2010 were below average to very much below average over eastern and central WA, with Giles and Balgo Hills in the Interior experiencing their coolest spring maximum temperatures on record.

December: Mean maximum temperatures were near average across the WA as a whole, however the Lower Southwest experienced many hot and humid days in the second half of the month.

Minimum temperature

Annual: Minimum temperatures in 2010 in WA were above average to very much above average in most of the state and sites in the west Kimberley, Pilbara and north Gascoyne observed their highest annual mean minimum temperatures on record. In contrast, most of the SWLD, as well as parts of the eastern Interior and southeast Kimberley recorded near average overnight minima in 2010. Averaged across the state as a whole, the annual mean minimum temperature was 0.74 °C, well above the 1961/90 average and the 3rd warmest since comparable records commenced in 1910.

January: Above average overnight temperatures were observed over most of the state during January 2010, particularly in central and southern parts. Balladonia, in the Eucla district, recorded its highest overnight temperature in 46 years of record with 27.8 °C on the 10th.

February: Above to very much above average minimum temperatures continued for much of WA in February 2010. Inland parts of WA generally saw the greatest departures from normal, with pockets of record high mean minimum temperatures.

Autumn: Mean minimum temperatures were above to very much above average through much of WA away from the west coast, and the season ranked as 4th warmest on record averaged across WA as a whole.

Winter: When averaged over the whole state, winter 2010 was above average, with northern and central parts reporting above average mean minima, however most of the SWLD, southern Gascoyne and southern Goldfields experienced abnormally cold minima as a result of low cloudiness and low rainfall. Several sites in the SWLD and Goldfields registered their lowest winter temperature on record in late June or early July. Eyre recorded a minimum temperature of -6.8 °C on 11 August 2010, the second lowest temperature recorded in WA (the record is -7.2 °C recorded at Eyre on 17 August 2008). In contrast, Mardie and Onslow Airport on the west Pilbara coast recorded their warmest winter on record in terms of mean overnight temperatures.

Spring: Above average mean minima were recorded in much of the west Kimberley, Pilbara, Gascoyne, and northern SWLD in spring, whilst below average minima were recorded near the WA south coast and in the northeast Interior and southeast Kimberley. Averaged across the state, a near average mean minimum temperature was recorded in spring.

December: Above average mean minimum temperatures were reported across much of WA in December, whilst only in the Kimberley were large areas of below average mean minima reported. As a result the WA mean minimum for December was above average.

Notable events

• Summer 2009/10 was particularly hot for WA with the summer mean temperature (average of maximum and minimum) being the highest on record. All months during the summer were abnormally hot with the third hottest December, second hottest January, and third hottest February recorded.
• The 2009/10 Tropical Cyclone Season in the north of WA was notable for a lack of tropical cyclones. No tropical cyclones were recorded in the WA region in February or March. However, two coastal crossings did occur during the tropical cyclone season, with TC Laurence (late December 2009) and TC Magda (January 2010) crossing the Kimberley coast as severe tropical cyclones. The west Pilbara and Gascoyne region received no tropical cyclone activity during the season.
• Severe storms affected southern WA on 21 and 22 March. Storms that swept through the Perth metropolitan area and southwest WA on the afternoon of 22 March, were considered to be some of the worst in Perth's history with over $1 billion in damage caused mainly by large hail (up to 6 cm) and flash flooding. The storms brought the first significant rainfall to Perth after a long dry spell that commenced on 20 November 2009 and included Perth's driest summer since records commenced in 1876.
• The Kimberley and northern Interior recorded an exceptionally wet "dry season" (May to October), with several sites reporting their highest seasonal rainfall on record.
• An extraordinarily dry year occurred in southwest WA with a very low number of cold frontal systems moving through the region during autumn, winter and spring. The Lower Southwest recorded a below average autumn, the driest winter and the driest spring since comparable records commenced in 1900, and this culminated in the driest year on record for the region by some margin.
• A significant tropical depression brought over 300 mm to western parts of the Gascoyne district in mid-December, and caused major flooding in the Gascoyne River and in Carnarvon. Many daily and monthly rainfall records were broken as a result. Carnarvon registered its wettest month since records commenced in the town in 1883, with a December total of 255.0 mm observed at Carnarvon Airport, and a daily total of 207.8 mm in the 24 hours to 9am on 17 December.

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Extremes in 2010
Hottest day	49.2 °C at Onslow on 1 Jan
Warmest days on average	36.2 °C at Fitzroy Crossing Aero
Coolest days on average	19.8 °C at Albany
Coldest day	9.0 °C at Mount Barker on 18 Aug
Coldest night	-6.8 °C at Eyre on 11 Aug
Coolest nights on average	7.9 °C at Jarrahwood
Warmest nights on average	26.5 °C at Troughton Island 23.9 °C at Truscott (mainland)
Warmest night	34.6 °C at Paraburdoo Aero on 2 Jan
Wettest overall	1620.9 mm at Theda (Kimberley)
Driest overall	72.8 mm at Mardie
Wettest day	215.6 mm at Cape Leveque on 19 May
Highest wind gust	128 km/h at Cunderdin Airfield on 22 Mar

Details Extremes Records Summaries Important notes the top

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Record highest annual daily rainfall
	Highest daily rainfall in 2010 (mm)		Previous annual highest		Years of record
Twin Peaks	163.0	on 18 Dec	150.0	on 22 Feb 1975	102
Marron	166.4	on 17 Dec	132.4	on 9 Mar 2000	99
Yaringa Station	179.0	on 17 Dec	175.0	on 9 Mar 2000	85
Carnarvon Airport	207.8	on 17 Dec	102.6	on 13 Jul 1998	66
Alexandra Bridge	82.0	on 27 May	78.0	on 27 Jan 1974	40

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Record highest total annual rainfall
	Total rainfall for 2010 (mm)	Previous annual highest		Years of record	Annual average
Eucla	450.3	439.8	in 2006	121	271.3

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Record lowest total annual rainfall
	Total rainfall for 2010 (mm)	Previous annual lowest		Years of record	Annual average
Bannister	318.2	341.1	in 1969	126	646.4
Bridgetown Comparison	399.9	510.1	in 1940	122	823.8
Greenbushes	467.9	603.6	in 2006	116	932.8
Broomehill	233.5	253.2	in 1954	115	448.3
Marradong	320.5	403.3	in 1914	112	723.9
Donnybrook	511.3	618.7	in 2006	108	975.9
Mundaring	599.6	653.4	in 1914	107	1072.4
Nannup	547.2	596.1	in 2006	103	947.3
Corrigin	166.5	214.4	in 1914	101	372.9
Lake Grace Comparison	155.6	187.0	in 2009	98	350.2
Quairading	162.7	185.5	in 1914	98	367.1
Bencubbin	118.4	123.3	in 1914	96	315.2
Tambellup	236.3	261.4	in 1940	96	448.8
Belka	143.6	163.1	in 1969	94	330.0
Manjimup	549.0	650.3	in 1940	91	1006.6
Doodlakine	129.0	144.6	in 1914	88	310.5
Kulin	190.4	210.5	in 1972	86	360.4
Cherry Tree	264.6	277.6	in 1940	82	458.6
Holt Rock	147.8	164.0	in 2002	82	328.3
Boscabel	285.0	288.9	in 1940	81	519.5
Bungulla	151.5	158.7	in 1994	79	310.2
Hyden	142.1	157.8	in 1972	79	338.6
Northcliffe	787.6	828.5	in 1969	78	1332.7
Graham Rock	140.2	174.7	in 1972	74	340.7
Dwellingup	589.7	751.8	in 1940	72	1245.2
Wongan Hills Res.Station	195.8	214.3	in 1972	72	354.6
Roelands	476.0	585.6	in 2001	68	890.5
Waroona	485.2	560.2	in 1940	68	995.6
Woodanilling	261.1	298.5	in 1944	68	461.7
Beacon	129.5	162.1	in 1940	67	314.6
Pemberton	669.1	802.0	in 1969	67	1191.4
Gabbin	126.1	165.5	in 1969	65	334.5
Karlgarin	91.9	169.1	in 1980	64	328.1
Goodlands	138.2	139.4	in 1976	57	312.3
Amrista Park	143.9	208.7	in 1972	53	354.8
Gordon River	309.3	355.8	in 1972	50	529.1
Swanara	153.2	177.8	in 1972	45	340.0
Gidgegannup	489.4	573.7	in 1969	43	890.5
Lancelin	342.0	428.0	in 2006	43	603.2
Pearce RAAF	347.2	458.8	in 1969	42	658.5
Gosnells City	499.6	553.1	in 2006	41	830.5
Karnet	596.3	655.8	in 1994	41	1170.8
Bickley	572.8	674.9	in 1969	39	1076.8
Culford	386.4	465.6	in 2004	34	657.8
Ferguson Valley	527.2	629.4	in 2006	34	898.2
Jarrahwood	526.8	661.9	in 2006	34	929.5
Jandakot Aero	495.8	509.8	in 2006	33	829.0
Chillinup	266.2	302.3	in 2009	31	414.4

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Record highest annual temperature
	Highest temperature in 2010 (°C)		Previous annual highest		Years of record	Annual average
Esperance	46.9	on 6 Jan	46.7	on 1 Feb 1991	42	21.8
Learmonth Airport	48.9	on 2 Jan	48.2	on 21 Jan 2003	36	31.8

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Record lowest annual daily maximum temperature
	Lowest daily maximum temperature in 2010 (°C)		Previous annual lowest		Years of record	Annual average
Telfer Aero	13.1	on 5 Jul	13.6	on 9 Jul 1986	37	34.1

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Record highest annual mean daily maximum temperature
	Mean daily maximum temperature for 2010 (°C)	Previous annual highest		Years of record	Annual average
Narrogin	23.7	23.6	in 1994	79	22.3
Dwellingup	23.6	23.1	in 1994	70	21.7
Manjimup	21.7	21.3	in 1994	69	20.3
Perth Airport	26.0	25.6	in 1999	65	24.4
Pemberton	21.6	21.5	in 1994	62	20.2
Corrigin	25.1	24.9	in 1994	58	23.7
Merredin	26.5	26.3	in 1972	44	24.9
Wongan Hills	26.9	26.8	in 1994	39	25.6
Pingelly	24.6	24.2	in 2009	37	23.2
Hyden	26.5	26.2	in 1994	33	25.0

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Record highest annual daily minimum temperature
	Highest daily minimum temperature in 2010 (°C)		Previous annual highest		Years of record	Annual average
Balladonia	27.8	on 10 Jan	27.1	on 30 Dec 2009	46	9.8

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Record lowest annual temperature
	Lowest temperature in 2010 (°C)		Previous annual lowest		Years of record	Annual average
Geraldton Airport	-0.4	on 4 Jul	0.5	on 26 Jun 1973	70	13.6
Norseman	-4.6	on 27 Jun	-3.1	on 21 Jul 1988	54	10.5
Narembeen	-3.2	on 3 Jul	-2.5	on 2 Jul 1982	44	10.6
Pingelly	-2.5	on 3 Jul	-1.6	on 22 Sep 2008	40	10.4

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Record highest annual mean daily minimum temperature
	Mean daily minimum temperature for 2010 (°C)	Previous annual highest		Years of record	Annual average
Broome Airport	23.0	22.8	in 1959	70	21.2
Port Hedland Airport	21.3	21.0	in 1998	61	19.4
Onslow Airport	20.1	20.0	in 2004	41	18.9
Emu Creek Station	19.4	19.0	in 1998	36	18.2
Gascoyne Junction	18.0	17.7	in 1996	31	16.8

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Details Extremes Records Summaries Important notes the top

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Summary statistics for 2010
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for 2010	Diff from average	Highest for 2010		Mean for 2010	Diff from average	Lowest for 2010		Total for 2010	Average annual total	Rank of 2010	Fraction of annual average
North Kimberley (district 01)
Kalumburu	34.0	-0.3	38.8	6 Apr	21.7	+1.4	9.9	13 Aug	1322.8	1163.5	high	114%
Troughton Island	31.7	+0.7	35.1	26 Nov	26.5	+1.2	21.3	2 Aug		784.7
Truscott	32.7		38.0	21 Nov	23.9		15.8	13 Aug
Wyndham	35.4	-0.2	41.8	7 Dec	23.8	+0.6	14.0	13 Aug	1017.2	814.1	high	125%
Wyndham Aero	35.7		42.6	7 Dec	23.5		12.0	5 Jun	893.6	816.5	high	109%
East Kimberley (district 02)
Argyle Aerodrome	34.3	-0.4	42.1	24 Nov	22.8	+0.6	13.1	7 Aug	886.6	767.9	high	115%
Halls Creek Airport	33.0	-0.6	42.2	1 Jan	20.7	+0.7	10.1	2 Jul	750.4	559.4	high	134%
Kununurra Aero	34.3	-0.6	42.4	22 Nov	21.9	+0.6	11.0	14 Aug	994.4	812.5	high	122%
West Kimberley (district 03)
Bidyadanga	34.2	+0.9	43.0	25 Mar			11.0	7 Aug	375.0	508.3	low	74%
Broome Airport	33.0	+0.8	40.7	9 Mar	23.0	+1.8	10.9	24 Jun	543.0	602.9	average	90%
Curtin Aero	35.7	+0.2	42.7	23 Nov	22.1	+1.1	12.4	16 Aug		816.5
Derby Aero	34.8	+0.3	42.2	17 Nov	22.7	+1.2	12.6	21 Jun	817.8	681.3	high	120%
Fitzroy Crossing Aero	36.2	+0.2	44.9	24 Nov	21.1	+1.0	8.4	8 Aug	717.4	699.2	average	103%
West Roebuck	34.5		42.7	28 Sep	21.7		8.8	10 Aug	576.0	848.6	low	68%
De Grey (district 04)
Karratha Aero	32.9	+0.6	42.3	23 Mar	21.8	+1.1	10.6	11 Jul	95.4	282.4	v low	34%
Port Hedland Airport	34.0	+0.8	45.5	2 Jan	21.3	+1.9	9.2	11 Aug	125.6	309.8	low	41%
Roebourne	35.7	+1.7	47.2	16 Feb	21.2	+0.7	11.1	10 Jul	93.9	310.6	v low	30%
Roebourne Aero	35.2		46.4	16 Feb	20.8		8.6	11 Aug	145.6
Fortescue (district 05)
Barrow Island Airport	29.4	+0.3	40.0	2 Jan	22.5	+0.4	14.7	14 Jul	95.4	271.6	v low	35%
Learmonth Airport	32.7	+0.9	48.9	2 Jan	18.3	+0.6	6.1	25 Jul	266.2	250.6	average	106%
Mardie	34.1	+0.2	49.0	1 Jan	20.2	+1.5	8.4	11 Jul	72.8	271.1	v low	27%
Onslow	31.8	+0.5	49.2	1 Jan	20.4	+2.4	10.6	11 Jul	84.0	270.1	low	31%
Onslow Airport	32.7	+0.8	48.8	1 Jan	20.1	+1.2	10.3	11 Jul	80.4	318.2	v low	25%
Wittenoom	34.1	+1.2	46.5	1 Jan	20.8	+1.1	6.3	14 Jul	281.1	457.6	low	61%
West Gascoyne (district 06)
Carnarvon Airport	27.8	+0.6	44.2	11 Dec	17.4	+0.2	4.5	2 Jul	367.6	228.7	v high	159%
Denham			43.1	28 Feb	18.7	+1.2	8.6	28 Jun	231.0	223.8	average	103%
Emu Creek Station	34.8	+1.1	49.1	2 Jan	19.4	+1.2	7.5	10 Jul	198.0	299.1	average	66%
Gascoyne Junction	33.2	+1.1	47.6	27 Dec	18.0	+1.2	3.7	7 Jul
Shark Bay Airport	29.4		46.7	18 Jan	16.7		2.8	7 Jul	260.2	192.7	high	135%
East Gascoyne (district 07)
Newman Aero	32.7	+0.8	45.5	21 Feb	17.7	+1.7	0.9	2 Jul	216.4	319.3	low	68%
Paraburdoo Aero	34.6	+1.2	47.4	21 Feb	19.7	+1.8	4.5	25 Jul	135.0	316.6	v low	43%
Murchison (district 07A)
Meekatharra Airport	30.2	+1.3	44.9	31 Dec	16.7	+0.8	2.4	2 Jul	181.8	236.1	average	77%
Mount Magnet Aero	28.9	+0.5	45.4	31 Dec	15.8	+0.8	0.5	28 Jun	297.0	252.6	high	118%
North Coast (district 08)
Dalwallinu	26.9	+0.7	44.6	5 Jan	11.5	-0.1	-0.2	4 Jul	283.4	285.8	average	99%
Dalwallinu Comparison	27.0	+1.0	44.4	5 Jan	12.3	+0.1	-0.3	26 Jun	286.8	356.8	low	80%
Geraldton Airport	26.9	+1.0	45.8	18 Jan	13.2	-0.4	-0.4	4 Jul	301.6	443.6	v low	68%
Kalbarri	28.7	+1.1	45.4	18 Jan	14.7	+0.2	1.2	28 Jun	260.2	350.8	low	74%
Mullewa	29.1	+1.3	46.2	19 Jan	14.0	+0.9	1.9	2 Jul	338.3	333.9	average	101%
North Island	25.1		36.8	28 Feb	18.7		10.5	26 May	221.4
Wongan Hills	26.9	+1.3	44.7	19 Jan	11.8	-0.1	-0.8	25 Jun	223.3	387.7	v low	58%
Central Coast (district 09)
Bickley	23.4	+1.0	41.8	18 Jan	11.4	+0.3	2.4	25 Jun	572.8	1076.8	lowest	53%
Champion Lakes	25.1		41.5	17 Jan	13.6		2.7	4 Jul	446.2
Garden Island HSF	23.1		40.4	17 Jan	14.5		5.8	25 Jun	407.6
Gingin Aero	26.3	+1.0	44.3	18 Jan	10.2	-0.6	-3.7	5 Jul	421.8	630.0	v low	67%
Gosnells City	26.5	+1.2	43.8	17 Jan			0.5	26 Jun	499.6	830.5	lowest	60%
Jandakot Aero	25.7	+1.4	43.0	18 Jan	10.8	-0.5	-2.5	26 Jun	495.8	829.0	lowest	60%
Karnet	23.6	+1.1	40.2	18 Jan			-1.0	25 Jun	596.3	1170.8	lowest	51%
Lancelin	25.3	+1.3	44.5	26 Feb			2.5	27 Jun	342.0	603.2	lowest	57%
Medina Research Centre	25.5	+1.3	43.8	17 Jan	12.1	-0.1	0.0	26 Jun	487.1	762.6	v low	64%
Pearce RAAF	26.3	+1.2	44.2	18 Jan	11.6	-0.6	-1.9	4 Jul	347.2	658.5	lowest	53%
Perth Airport	26.0	+1.6	43.2	18 Jan	11.9	-0.2	-1.0	3 Jul	483.2	774.2	v low	62%
Perth Metro	25.3	+0.8	42.9	17 Jan	12.3	-0.3	-0.6	26 Jun	503.8	852.6	v low	59%
Rottnest Island	22.4	+0.4	41.1	17 Jan	15.7	+0.1	7.9	10 Jul	476.2	563.2	low	85%
Swanbourne	24.9	+1.1	42.9	17 Jan	13.5	-0.3	2.9	25 Jun	584.4	720.0	v low	81%
South Coast (district 09A)
Albany	19.8	+0.3	38.9	18 Jan	12.7	+1.1	5.5	10 Jun	742.2	929.7	v low	80%
Albany Airport	20.5	+0.3	40.7	18 Jan	10.4	-0.1	0.9	10 Jun	674.6	794.4	low	85%
Bridgetown Comparison	23.7	+1.3	41.0	18 Jan	8.4	+0.4	-2.6	10 Jun	399.9	823.8	lowest	49%
Bunbury	23.8	+0.9	40.6	17 Jan	10.4	-0.5	-0.3	3 Jul	484.4	724.8	v low	67%
Busselton	23.3	+0.6	37.5	17 Jan	10.8	-0.5	1.5	3 Jul
Busselton Aero	23.6	+0.7	39.4	17 Jan	9.4	-0.8	-0.1	10 Jun	435.6	704.3	v low	62%
Cape Leeuwin	20.6	+0.9	38.3	12 Mar	14.7	+0.6	6.9	10 Aug	625.0	970.0	v low	64%
Cape Naturaliste	22.0	+1.4	37.8	17 Jan	12.9	+0.2	5.9	24 Jun	574.0	812.1	v low	71%
Collie East	24.3		40.4	18 Jan	8.1		-3.0	11 Jun	390.0
Donnybrook	24.5	+1.4	41.5	17 Jan	10.3	+0.6	0.0	3 Jul	511.3	975.9	lowest	52%
Dwellingup	23.6	+1.9	40.4	18 Jan	9.3	-0.2	-2.0	25 Jun	589.7	1245.2	lowest	47%
Esperance	22.4	+0.6	46.9	6 Jan	12.2	+0.2	4.2	26 Jun	494.8	615.6	low	80%
Esperance Aero	22.5	+0.5	46.4	6 Jan	11.2	0.0	3.5	3 Jul	532.6	564.6	average	94%
Harvey	24.6		41.2	17 Jan	11.1		1.0	30 Jun	481.2	834.9	v low	58%
Hopetoun North	21.8	-0.4	48.0	6 Jan	11.6	+0.2	3.4	11 Jun	461.6	487.9	low	95%
Jarrahwood	23.7	+1.4	40.5	17 Jan	7.9	-0.7	-3.2	10 Jun	526.8	929.5	lowest	57%
Mandurah	23.9		40.1	25 Dec	14.4		4.9	25 Jun	451.4
Manjimup	21.7	+1.4	40.8	18 Jan	9.7	+0.1	2.0	3 Jul	549.0	1006.6	lowest	55%
North Walpole	20.5		38.5	12 Mar	11.6		3.7	11 Jun
Pemberton	21.6	+1.4	38.9	17 Jan	10.3	+0.2	2.6	11 Jun	669.1	1191.4	lowest	56%
Rocky Gully	21.2	+0.5	39.7	6 Jan	9.3	-0.3	1.4	25 Jun	475.2	683.5	v low	70%
Shannon	20.7	+0.3	38.5	18 Jan	9.5	-0.1	1.8	9 Aug	520.6	1021.7	v low	51%
Witchcliffe	21.9	+0.8	39.3	17 Jan	10.1	-0.5	-0.7	10 Jun	857.2	935.5	average	92%
North Central (district 10)
Cunderdin Airfield	26.8	+1.1	46.0	19 Jan	9.9	-0.4	-3.7	5 Jul	167.2	300.5	v low	56%
Merredin	26.5	+1.6	45.2	6 Jan	11.4	+0.1	-2.5	27 Jun	179.4	325.2	v low	55%
Northam	26.8	+1.5	44.5	18 Jan	10.2	-0.7	-3.5	26 Jun	232.6	428.6	v low	54%
York	26.5	+1.2	44.5	18 Jan	8.7	-0.8	-4.2	7 Jul	221.2	378.2	v low	58%
South Central (district 10A)
Brookton	25.1	+0.9	42.7	18 Jan			-2.9	26 Jun	256.4	451.8	v low	57%
Corrigin	25.1	+1.4	43.5	9 Jan	9.8	-0.1	-4.0	26 Jun	166.5	372.9	lowest	45%
Hyden	26.5	+1.5	47.0	9 Jan	9.7	-0.2	-4.0	25 Jun	142.1	338.6	lowest	42%
Jacup	22.4	+0.6	46.1	6 Jan			0.8	23 Aug	364.6	455.5	low	80%
Katanning	22.9	+0.6	42.4	18 Jan	9.2	-0.2	-0.2	25 Jun
Katanning Comparison	23.3	+1.2	42.2	18 Jan	9.0	-0.3	-2.4	11 Jun	287.9	477.7	v low	60%
Lake Grace	24.0	+0.6	44.4	6 Jan	9.9	-0.3	-1.3	23 Aug	170.6	325.1	v low	52%
Lake Grace Comparison	24.1	+0.8	43.8	6 Jan	10.2	0.0	-1.3	23 Aug	155.6	350.2	lowest	44%
Narembeen	26.4	+1.3	45.3	9 Jan	10.5	-0.1	-3.2	3 Jul	180.4	330.7	v low	55%
Narrogin	23.7	+1.4	42.2	18 Jan	9.4	0.0	-1.6	25 Jun	291.3	495.0	v low	59%
Newdegate Research Station	24.0	+0.8	45.7	6 Jan	8.2	-0.5	-2.4	10 Sep
Ongerup	22.5	+0.8	43.0	18 Jan	9.5	-0.2	-0.4	25 Jun	293.6	384.8	low	76%
Pingelly	24.6	+1.4	42.6	18 Jan	10.2	-0.2	-2.5	3 Jul	287.2	445.9	v low	64%
Wagin	23.9	+1.0	43.1	18 Jan	9.3	-0.4	-1.2	11 Jun	246.8	433.4	v low	57%
Wandering	24.6	+1.0	43.6	18 Jan			-2.9	11 Jun	277.4	488.9	v low	57%
Eucla (district 11)
Balladonia	25.1	+0.5	45.6	19 Feb	10.1	+0.3	-2.3	26 Jun	227.0	261.9	average	87%
Eucla	22.8	0.0	43.6	7 Feb	12.3	+0.1	1.8	5 Jul	448.8	271.3	highest	165%
Eyre	23.6	+0.8	45.6	7 Jan	9.8	-1.0	-6.8	11 Aug	262.4	306.8	low	86%
Forrest	25.4	-0.8	44.4	29 Dec	11.1	+0.2	0.0	11 Aug	276.2	241.8	average	114%
Red Rocks Point	21.9		44.1	7 Jan	12.9		2.1	11 Aug	315.2
South East (district 12)
Bulga Downs	29.5		46.5	15 Feb	14.0		-1.7	2 Jul	243.4	229.5	average	106%
Kalgoorlie-Boulder Airport	25.9	+0.6	45.0	20 Jan	12.4	+0.7	-1.6	27 Jun	165.6	262.7	low	63%
Laverton Aero	27.2	+0.4	44.1	20 Jan	14.6	+0.8	-0.3	4 Jul	243.2	280.6	average	87%
Leinster Aero	28.4	+0.3	44.8	20 Jan	15.0	+0.4	-0.5	2 Jul	258.0	260.7	average	99%
Leonora	28.1	+0.2	46.5	20 Jan	14.5	+0.6	0.5	28 Jun	220.2	234.0	average	94%
Leonora Aero	28.0		45.5	20 Jan	14.8		-0.9	2 Jul	192.6
Munglinup West	23.0		47.6	6 Jan	10.4		2.0	3 Jul
Norseman Aero	25.4	+0.4	44.8	6 Jan	9.6	-0.2	-6.0	27 Jun	183.4	294.0	v low	62%
Southern Cross Airfield	26.4	+0.6	45.7	6 Jan	10.3	+0.2	-4.2	27 Jun	151.4	303.6	v low	50%
North East (district 13)
Giles Meteorological Office	28.8	-0.5	42.5	1 Jan	15.9	0.0	2.3	14 Jul	337.4	283.3	high	119%
Telfer Aero	34.6	+0.5	46.5	1 Jan	20.6	+1.2	7.0	11 Aug	246.0	359.6	average	68%
Warburton Airfield	29.8	0.0	45.3	30 Dec	16.2	+1.6	0.1	14 Jul	183.2	240.2	average	76%
Wiluna	30.0	+0.9	45.4	31 Dec			-0.5	2 Jul	229.1	254.9	average	90%

Details Extremes Records Summaries Important notes the top

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