Western Australia in February 2020: wet in western half; warm nights

February rainfall was near average to above average for most of the State's western half. Severe tropical cyclone Damien brought heavy rainfall to the central Pilbara, east Gascoyne and Northern Interior in early February. Thunderstorms produced moderate falls in the southern Gascoyne, South West Land Division and Goldfields late in February. Overnight temperatures were above average for most of the State apart from the far northwest and southeast, resulting in WA's fourth–highest mean minimum temperature on record for February.

Wet in the western half of WA

  • February rainfall was near average to above average for most of the State's western half, and part of the Kimberley; February rainfall was 8% below average for WA as a whole
  • Severe tropical cyclone  Damien brought 100 mm to 300 mm to the central Pilbara, Northern Interior and east Gascoyne between the 8th and 10th
  • Karratha Airport recorded a two–day rainfall total of 235.2 mm (8th and 9th), which was its wettest two days in February since 2006 when TC Emma brought 279.6 mm on 27 and 28 February
  • Doolgunna and Bryah in the Gascoyne had daily rainfall in excess of 100 mm on the 10th, which was their wettest February day on record
  • A tropical low (ex-TC Esther) produced 100–200 mm in the east Kimberley at the end of February; Ellenbrae and Lake Argyle Resort had their highest February daily rainfall on record
  • A number of sites in the Central West district had their wettest February for more than 100 years from frequent thunderstorms and showers in late February
  • Many sites in the South West Land Division (SWLD) had their wettest February for decades 

Warmer than average nights for most of WA

  • Mean minimum temperatures were above average for most of the State apart from the far northwest and southeast
  • WA's mean minimum temperature was 1.29 °C above average, the fourth–highest on record
  • Mean maximum temperatures were mostly near average, with above average maxima in the State's east and far southwest
  • WA's mean maximum temperature was 1.07 °C above average
  • Hot days with temperatures reaching the 40s started along the west coast on the 3rd then expanded over the SWLD till the 8th as the result of a slow-moving trough; a number of sites had their highest February temperature on record
  • Northerly winds provided little relief from the heat overnight, and at Wagin (Great Southern) the temperature only dropped to 26.7 °C in the morning on the 7th from a high of 42 °C previous day, which was its all-time highest minimum temperature on record
  • Argyle and Wyndham in the Kimberley had three and four nights with minimum temperature of 30 °C or above, which was their highest number of such nights in February, and the morning of the 26th was their warmest February morning on record respectively
  • A number of sites in the Kimberley had their highest February mean minimum temperature on record

Severe tropical cyclone Damien

  • Tropical cyclone Damien was named on the 6th to the northwest of Broome. Damien first moved west–southwest then south towards the Pilbara coast and intensified to a severe system (category 3) on the 7th
  • Severe tropical cyclone Damien made landfall over the Karratha-Dampier region in the afternoon of the 8th. Damien and its remnant moved inland through the Pilbara, east Gascoyne and northern Goldfields districts for the next two days
  • The Dampier weather radar sustained significant damage, and Karratha Airport recorded a 194 km/h wind gust on the 8th, which was its highest gust in 17 years of wind record

Thunderstorms in the SWLD in late February

  • A persistent trough near the west coast combined with an upper level cut-off low pressure system to generate a series of thunderstorms in the SWLD, and particularly around Greater Perth between the 23th and 28th
  • The State Emergency Service responded hundreds of requests for damage by gusty winds, with downed trees and water ingress in the Central West, Lower West and South West districts

Flooding in the Fitzroy River and Ord River catchments

  • Ex-tropical cyclone Esther produced moderate to heavy rainfall in the east and west Kimberley at the end of February and the start of March.
  • Moderate to major flooding had occurred at the Fitzroy River catchment, and the Ord River catchment reached moderate flooding level

Further information

Media
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Extremes in February 2020
Hottest day 46.5 °C at Emu Creek Station on the 6th
Warmest days on average 41.1 °C at Telfer Aero
Coolest days on average 23.4 °C at Albany
Coldest day 18.2 °C at Salmon Gums Res.Stn. on the 11th
Coldest night 4.9 °C at Collie East on the 1st
4.9 °C at Newdegate Research Station on the 1st
Coolest nights on average 14.3 °C at Jacup
14.3 °C at Rocky Gully
Warmest nights on average 27.9 °C at Broome Airport
Warmest night 31.1 °C at Telfer Aero on the 18th
Warmest on average overall 34.2 °C at Telfer Aero
Coolest on average overall 20.6 °C at Albany
20.6 °C at North Walpole
Wettest overall 420.0 mm at Drysdale River Station
Wettest day 190.8 mm at Ellenbrae on the 29th
Strongest wind gust 194 km/h at Karratha Aero on the 8th
161 km/h at Roebourne Aero on the 8th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

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


Record highest February daily rainfall
New record
(mm)
Old
record
Years of
record
Doolgunna 122.0 on the 10th 92.0 on the 17th in 2011 91
Bryah 114.4 on the 10th 76.2 on the 14th in 1961 66
Lake Argyle Resort 138.6 on the 28th 132.4 on the 7th in 2014 52
Rosa Brook 32.0 on the 23rd 21.2 on the 25th in 1997 48
Perivale Orchard 23.0 on the 27th 21.8 on the 26th in 1989 40
Ellenbrae 190.8 on the 29th 92.2 on the 11th in 2008 31
Busselton Aero 16.6 on the 27th 8.8 on the 14th in 2017 23



Record highest February total rainfall
New record
(mm)
Old
record
Years of
record
Average for
February
Yandanooka 103.6 102.4 in 1915 113 14.5
Coorow 116.0 96.7 in 1918 107 16.5
Ballidu 92.2 87.1 in 1939 106 16.1
Mindalla 118.5 90.8 in 1970 100 14.0
Amery Acres 129.4 128.0 in 1939 63 17.3
Arena 109.4 44.4 in 1986 40 10.9
Southern Cross Airfield 103.4 73.8 in 2011 23 27.6
Dalwallinu 76.0 51.6 in 2008 22 13.8

Highest February total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
February
Kokardine 99.6 111.1 in 1943 16.5
Cadoux 99.5 114.1 in 1943* 16.6
Happy Valley 93.4 116.8 in 1955 15.9
Kondut 71.0 85.5 in 1955* 15.1
Gabbin 134.2 142.0 in 1943* 18.2
Cowcowing 65.4 83.8 in 1970 15.4
Koorda 86.1 105.1 in 1970 15.0
Moningarin 92.6 101.6 in 1970 17.3
Trayning 95.7 101.9 in 1970 16.1
Bencubbin 78.0 97.5 in 1970* 20.4
Wyalkatchem 84.5 110.2 in 1970* 17.4
Bonnie Doon 72.8 77.7 in 1970* 17.0
Latham 93.4 101.6 in 1970* 15.8
Rosa Brook 48.3 54.2 in 1926* 11.4
Wongan Hills 68.2 79.4 in 1976 15.8
Wubin 78.5 78.7 in 1970* 15.7
Watheroo 81.1 97.5 in 1974* 16.7
Hines Hill 57.6 72.2 in 1979 15.9
Mukinbudin 81.8 91.2 in 1970* 17.8
Nangeenan 63.8 90.5 in 1978* 15.0
Nungarin 77.1 82.4 in 1978* 17.9
Konnongorring 71.8 73.2 in 1986 15.0
Cape Naturaliste 31.0 57.8 in 1989* 11.4
Three Springs 89.0 101.0 in 1990 17.2
Sandsprings 58.4 84.4 in 1986* 12.1
Badgingarra Research Stn 84.2 88.2 in 1992* 15.8
Bryah 147.0 154.7 in 1963* 35.8
Bullfinch 109.0 134.4 in 1995 24.3
Gingin 73.0 79.4 in 1992* 13.4
Busselton Shire 24.6 35.6 in 1997 10.2
Challa 70.8 216.0 in 1995* 24.3
Cowaramup 34.5 36.2 in 1997* 11.3
Mount Vernon 180.2 217.2 in 2000 62.1

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




Record highest February temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Jacup 42.5 on the 8th 41.6 on the 14th in 2013 27 27.5
Katanning 41.0 on the 7th = 41.0 on the 3rd in 2007 22 29.7
Shannon 39.2 on the 5th 39.0 on the 8th in 1999 22 26.7



Record highest February mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Shannon 28.5 28.3 in 1999 21 26.7



Record lowest February mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Varanus Island 31.1 31.2 in 2010 20 32.5



Record highest February daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Wagin 26.2 on the 7th 25.7 on the 19th in 2004 47 14.9
Argyle Aerodrome 30.5 on the 26th 30.0 on the 4th in 2003 26 25.2
Mount Elizabeth 25.8 on the 15th 25.5 on the 27th in 1998 26 21.9
Southern Cross Airfield 28.8 on the 8th 25.7 on the 2nd in 1997 24 17.7
Morawa Airport 29.0 on the 3rd = 29.0 on the 9th in 2003 23 20.4
Kalumburu 28.4 on the 13th 28.0 on the 18th in 2003 22 24.3
Wyndham Aero 31.0 on the 26th 30.0 on the 12th in 2003 20 25.9



Record highest February mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Kununurra Aero 25.8 25.6 in 2016 33 24.7
Mount Elizabeth 22.8 22.7 in 2016 25 21.9
Hopetoun North 17.2 17.1 in 2015 22 15.8
Kalumburu 25.4 24.9 in 2010 21 24.3



Record highest February mean temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Kalumburu 30.4 = 30.4 in 2016 21 28.9
Shannon 21.6 21.5 in 2015 21 20.0



Summary statistics for February 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
February
2020
Diff
from
average
Highest for
February
2020
Mean for
February
2020
Diff
from
average
Lowest for
February
2020
Total for
February
2020
Average
for
February
Rank of
February
2020
Fraction of
February
average
North Kimberley (district 01)
Doongan 33.3 +0.5 36.3 15th 23.3 +0.7 20.2 4th 95.1 236.5 low 40%
Kalumburu 35.3 +1.8 38.3 17th 25.4 +1.1 22.8 4th 260.2 294.5 average 88%
Mount Elizabeth 32.8 +0.4 35.7 17th 22.8 +0.9 20.3 18th 333.6 231.5 high 144%
Troughton Island 32.5 +0.9 33.6 19th 27.6 +1.3 23.2 28th 144.2 188.1 average 77%
Truscott 32.6 +0.3 34.6 27th 26.5 +1.1 21.8 4th 340.8 229.5 average 148%
Wyndham Aero 37.6 +1.6 41.4 25th 27.6 +1.7 24.0 19th 240.2 216.5 average 111%
East Kimberley (district 02)
Argyle Aerodrome 36.7 +0.8 41.0 25th 26.7 +1.5 23.6 5th 270.0 180.9 high 149%
Halls Creek Airport 35.0   38.3 23rd 24.1   21.1 14th 191.8
Kununurra Aero 36.3 +1.2 40.9 23rd 25.8 +1.1 22.2 23rd 322.6 217.3 high 148%
Warmun 36.4 +0.3 41.5 24th 25.3 +1.0 23.0 12th 171.0 176.5 average 97%
West Kimberley (district 03)
Bidyadanga 35.2 +1.0 40.0 4th 27.1 +1.4 23.0 19th 48.2 137.7 low 35%
Broome Airport 33.7 +0.8 37.6 4th 27.9 +1.9 22.8 20th 68.8 179.6 low 38%
Curtin Aero 37.0 +1.4 40.4 3rd 25.7 +1.1 22.1 20th 69.0 187.3 low 37%
Cygnet Bay 34.0 +0.8 37.2 29th 26.2 +0.9 22.5 5th 222.6 197.6 average 113%
Derby Aero 36.1 +1.6 40.6 3rd 26.9 +1.5 23.2 20th 95.4 199.9 low 48%
Fitzroy Crossing Aero 37.9 +1.0 42.4 23rd     22.9 2nd 57.0 141.4 low 40%
Yampi Sound (Defence) 35.5   37.5 17th 25.9   22.7 18th 179.4
De Grey (district 04)
Bedout Island 33.6 +0.1 37.5 5th 27.8 +0.3 24.4 9th
Karratha Aero 34.9 -0.9 41.7 5th 26.7 0.0 23.5 8th 235.2 78.8 v high 298%
Mandora 37.0 +1.4 44.6 18th 26.2 +1.2 20.2 4th 3.2 103.2 low 3%
Marble Bar 39.8 0.0 43.0 29th 26.4 +0.4 23.7 9th 33.2 73.7 average 45%
Port Hedland Airport 36.2 0.0 42.9 4th 26.3 +0.8 23.7 9th 103.2 88.9 average 116%
Fortescue (district 05)
Barrow Island Airport 32.3 -1.3 38.8 6th 25.5 -0.7 23.0 2nd 9.8 48.0 average 20%
Karijini North 38.5   42.0 1st 26.1   22.0 9th 131.6
Learmonth Airport 37.5 -0.1 44.2 6th 23.1 -1.0 20.0 1st 0 39.6 lowest 0%
Mardie 36.4 -1.1 44.6 6th 25.6 +0.2 21.0 1st 29.2 62.0 average 47%
Onslow Airport 35.8 -0.6 42.2 6th 25.3 +0.3 20.5 1st 0 58.9 lowest 0%
Thevenard Island 33.0 -0.7 39.3 6th 25.6 -0.5 22.5 1st 0 62.7 lowest 0%
West Gascoyne (district 06)
Carnarvon Airport 30.9 -1.6 37.2 2nd 23.2 -0.2 19.0 1st 0 19.1 lowest 0%
Denham 30.7 -1.1 35.0 2nd     21.3 1st 9.6 15.2 high 63%
Murchison 39.2 +0.6 44.0 27th 23.8 +0.6 19.7 1st 15.6 30.6 average 51%
Shark Bay Airport 33.5 -1.3 43.5 2nd 21.7 -0.6 17.2 14th 4.0 22.0 average 18%
East Gascoyne (district 07)
Newman Aero 38.6 +1.3 42.5 27th 26.0 +2.0 22.2 10th 61.8 70.2 average 88%
Paraburdoo Aero 38.8 -0.1 43.7 1st 25.6 +0.5 21.5 10th 153.0 75.3 high 203%
Murchison (district 07A)
Meekatharra Airport 37.5 +0.7 41.9 28th 24.9 +1.1 17.4 11th 40.8 36.5 average 112%
Mount Magnet Aero 37.5 +0.6 44.0 28th 24.0 +0.7 18.5 1st 41.0 35.4 average 116%
Paynes Find 36.5 0.0 43.3 6th 22.6 +1.4 17.2 1st 53.0 23.9 high 222%
North Coast (district 08)
Dalwallinu 34.8 0.0 43.7 6th 19.6 +1.2 12.0 1st 76.0 13.8 highest 551%
Geraldton Airport 32.5   44.8 3rd 20.9   15.1 1st 30.8
Kalbarri 31.6 -2.6 41.8 2nd 21.2 +0.6 16.2 1st 22.7 8.0 high 284%
Morawa Airport 37.0 +0.2 44.0 5th 21.3 +0.9 14.6 1st 84.0 19.1 v high 440%
Mullewa 36.9 +0.4 43.5 3rd 21.2 +1.0 13.7 1st 62.1 19.0 v high 327%
North Island 28.5 +0.2 32.2 27th 21.7 -0.2 17.8 1st 35.2 8.4 v high 419%
Wongan Hills 34.1 0.0 42.8 5th 19.3 +1.1 13.7 1st 68.2 15.8 v high 432%
Central Coast (district 09)
Badgingarra Research Stn 33.6 -1.1 42.6 4th 19.3 +1.5 13.6 1st 84.2 15.8 v high 533%
Bickley 30.5 0.0 39.5 4th 17.0 +1.2 11.1 1st 56.0 20.7 high 271%
Garden Island HSF 29.9 +1.7 40.3 4th 20.6 +1.3 15.0 1st 15.4 15.0 high 103%
Gingin Aero 33.5 +0.4 43.9 4th 19.3 +2.3 11.4 1st 27.8 15.5 high 179%
Gosnells City 33.2 +0.2 42.5 4th 20.5 +1.8 14.1 1st 22.8 15.6 high 146%
Jandakot Aero 32.4 +0.8 41.6 4th 19.8 +2.7 12.8 1st 9.2 17.5 average 53%
Karnet 30.1 -0.4 38.2 14th 16.9 +1.2 8.6 1st 14.6 20.8 average 70%
Lancelin 31.2 +1.3 42.0 3rd 19.5 +1.4 13.2 1st 19.8 13.0 high 152%
Millendon (Swan Valley) 33.3   43.6 4th 19.8   12.8 1st 27.2
Pearce RAAF 34.0 +0.7 44.6 4th 20.1 +2.6 13.3 1st 15.4 13.1 high 118%
Perth Airport 33.0 +1.1 43.3 4th 19.9 +2.4 13.7 1st 19.0 14.9 high 128%
Perth Metro 32.3 +0.7 42.7 4th 20.2 +1.9 14.6 1st 34.4 13.4 v high 257%
Rottnest Island 28.2 +1.0 38.6 4th 20.3 +0.8 15.7 10th 8.8 10.3 high 85%
Swanbourne 30.9 +0.5 42.1 4th 20.3 +1.6 13.9 1st 22.4 12.1 high 185%
South Coast (district 09A)
Albany 23.4 +0.5 31.2 28th 17.8 +2.2 14.8 1st 17.6 22.5 average 78%
Albany Airport 26.0   31.9 28th 16.3   10.9 1st 14.4
Bridgetown 30.4 +0.5 39.8 5th 14.8 +1.3 5.6 1st 8.2 11.5 high 71%
Bunbury 30.9 +0.9 38.8 4th 17.4 +1.6 7.4 1st 12.4 7.2 high 172%
Busselton Aero 30.8 +0.7 37.1 4th 16.7 +2.1 7.6 9th 18.8 4.9 v high 384%
Cape Leeuwin 24.6 +1.2 35.0 28th 18.4 +1.1 15.7 9th 17.8 15.6 high 114%
Cape Naturaliste 28.7 +2.8 37.3 4th 17.2 +1.5 11.4 10th 31.0 11.4 v high 272%
Collie East 30.6 -0.1 39.7 5th 15.4 +1.5 4.9 1st 17.8 10.2 high 175%
Donnybrook 31.2 +0.7 39.6 5th       14.6 14.8 high 99%
Dwellingup 30.4 +0.7 38.4 5th 16.4 +1.8 8.6 1st 32.4 21.5 high 151%
Esperance 26.6 +0.4 41.4 8th 16.9 +0.7 12.1 1st 12.2 25.5 average 48%
Esperance Aero 27.9 +0.3 42.4 8th 15.6 +0.1 9.8 1st 31.6 29.5 average 107%
Hopetoun North 25.5 +0.1 37.6 7th 17.2 +1.4 13.4 18th 14.4 24.8 average 58%
Jarrahwood 31.2 +1.3 39.5 5th 15.6 +2.1 5.5 1st 17.8 12.2 high 146%
Mandurah 30.6 +0.9 40.1 4th 20.5 +1.2 14.4 1st 8.4 11.9 average 71%
Manjimup 29.6 +2.5 39.3 5th 14.8 +1.4 9.7 9th 30.6 18.4 high 166%
North Walpole 25.5 +0.6 31.5 11th 15.8 +0.7 11.3 1st 31.6 21.3 high 148%
Rocky Gully 28.8 +1.4 40.6 6th 14.3 +1.1 7.1 1st 27.4 17.1 high 160%
Shannon 28.5 +1.8 39.2 5th 14.6 +1.2 8.0 10th 26.8 16.7 high 160%
Witchcliffe 28.4 +1.3 34.2 20th 15.4 +1.0 9.7 9th 13.6 8.8 high 155%
North Central (district 10)
Bencubbin 33.4 -0.2 42.5 7th 20.0 +1.8 13.8 1st 78.0 20.4 v high 382%
Cunderdin Airfield 33.9 -0.3 44.4 5th 18.9 +1.5 13.1 1st 81.4 17.1 v high 476%
Merredin 33.1 -0.1 42.5 6th 19.9 +1.8 13.1 1st 43.8 15.7 high 279%
Northam 33.3 -0.4 44.6 5th 19.2 +2.0 13.2 1st 35.5 13.9 high 255%
York 33.3 -0.4 44.0 5th 18.1 +1.6 10.6 1st 45.2 19.4 v high 233%
South Central (district 10A)
Beverley 33.7 +0.1 44.2 5th 18.2 +1.5 11.4 1st 40.4 14.3 high 283%
Brookton 32.3 0.0 42.0 5th 17.3 +1.3 10.2 1st 34.6 15.5 high 223%
Corrigin 31.6 0.0 41.0 7th     11.0 3rd 15.6 17.0 high 92%
Hyden 33.6 +0.6 44.0 8th 17.1 +1.2 9.0 1st 45.4 20.3 high 224%
Jacup 27.4 -0.1 42.5 8th 14.3 +0.6 6.2 1st 58.8 21.7 high 271%
Katanning 29.6 -0.1 41.0 7th 15.1 +1.0 8.1 1st 23.2 14.1 high 165%
Lake Grace 30.4 -0.3 42.3 8th 16.5 +1.0 9.2 1st 34.0 16.9 high 201%
Narembeen 32.6 -0.5 42.1 8th 18.5 +1.6 11.6 2nd 48.5 18.5 high 262%
Narrogin 30.8 +0.6 41.8 6th 16.5 +2.2 8.8 1st 42.5 17.0 high 250%
Newdegate Research Station 30.5 0.0 42.0 8th 15.2 +1.1 4.9 1st 33.4 22.3 high 150%
Pingelly 31.6 +0.3 41.7 6th 17.4 +1.4 10.0 1st 20.2 14.3 high 141%
Ravensthorpe 28.2 -0.1 40.8 8th     9.3 1st 34.8 26.5 high 131%
Wagin 30.7 +0.3 42.0 6th 16.3 +1.4 7.3 1st 44.4 16.4 v high 271%
Wandering 31.5 -0.2 42.0 5th 16.4 +1.8 7.1 1st 42.8 15.9 v high 269%
Eucla (district 11)
Eucla 26.0 +0.3 36.7 16th 17.5 +0.4 12.8 2nd 3.0 19.1 average 16%
Eyre 27.6 +1.0 43.2 16th 15.3 -0.7 7.0 22nd 1.8 19.3 low 9%
Forrest 32.3 +0.1 42.0 16th 15.7 -0.8 11.4 22nd 0.8 30.1 low 3%
Red Rocks Point 24.9 -0.2 34.7 16th 19.0 +0.6 15.3 29th 0.6 36.3 v low 2%
South East (district 12)
Bulga Downs 36.2 -0.6 41.9 28th 22.5 +0.8 17.9 11th
Kalgoorlie-Boulder Airport 31.9 -0.2 41.1 15th 19.0 +1.1 14.5 18th 62.2 31.6 high 197%
Laverton Aero 36.2 +2.3 43.0 29th 22.0 +1.2 17.1 18th 10.0 56.8 low 18%
Leinster Aero 36.2 +0.7 41.9 29th 23.1 +0.9 18.2 20th 30.6 40.5 average 76%
Leonora Aero     42.4 15th 23.2 +1.6 17.2 11th 6.2 37.8 low 16%
Munglinup West 28.7 -0.2 42.0 8th 15.0 0.0 8.3 1st 44.0 38.8 average 113%
Norseman Aero 31.4 -0.2 39.7 15th 16.7 +0.6 9.3 1st 13.0 26.0 average 50%
Salmon Gums Res.Stn. 29.6 0.0 41.4 8th 15.0 +0.9 7.0 1st 53.6 24.4 high 220%
Southern Cross Airfield 33.0 -0.8 42.5 8th 19.2 +1.5 13.0 1st 103.4 27.6 highest 375%
North East (district 13)
Carnegie 38.7 +1.6 43.2 16th 24.7 +1.8 21.0 20th 6.3 52.5 low 12%
Giles Meteorological Office 38.9 +2.8 41.9 17th 24.5 +1.7 18.4 3rd 7.6 43.2 low 18%
Telfer Aero 41.1 +2.4 44.1 17th 27.3 +1.9 23.7 16th 41.0 96.8 average 42%
Warburton Airfield 39.2 +2.6 43.0 16th 25.7 +3.5 20.6 3rd 0 34.7 lowest 0%
Wiluna Aero 36.9   42.5 29th 24.1   18.7 20th 45.4
Offshore Islands (district 200)
Adele Island 31.5   32.7 25th 27.6   23.1 5th
Browse Island 30.3   31.4 23rd 28.2   23.7 5th
Varanus Island 31.1 -1.4 35.0 6th 25.7 -1.0 23.7 1st 35.4 48.6 high 73%

Notes

The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Western Australia using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 9 am on Tuesday 3 March 2020. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

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Climate