Western Australia in June 2020: warm and dry

June 2020 was a very warm and also very dry month for Western Australia. Mean maximum temperatures were above to very much above average across WA, and the statewide mean maximum temperature was the highest on record. Rainfall was below average to very much below average for most of the State, and it was the tenth-driest June on record for Western Australia. It was a very warm start to the year (January–June) for the State, and the statewide mean temperature was the fifth warmest January–June periods on record.

Dry across most of WA

  • June rainfall was below to very much below average for most of Western Australia; June rainfall was 66% below average and the tenth-driest June on record for the State as a whole
  • It was particularly dry in the eastern Gascoyne, Goldfields and along the Eucla districts with monthly rainfall totals mostly less than 10 mm
  • The Lower West and South West districts were wettest areas with monthly rainfall totals between 100 mm and 200 mm, and in excess of 220 mm in isolated locations; the wettest spot was Worsley Downs (in the South West district) with a total of 226.8 mm
  • Cold fronts produced isolated heavy daily rainfall in excess of 50 mm in the Lower West and South West on the 18th, 23rd and 29th; 90.2 mm on the 29th at Bickley was the State's highest daily rainfall of the month and its second-highest daily rainfall for June on record

Above average daytime temperatures across WA

  • Daytime temperatures were above average to much above average across Western Australia
  • Western Australia's mean maximum temperature was 2.52 °C above average, and the highest for June on record
  • Overnight temperatures were above average in western and central parts of Western Australia though near average elsewhere; the mean minimum temperature was 0.48 °C for Western Australia
  • Western Australia's mean temperature (average of maximum and minimum temperature) was 1.50 °C above average, which was the third-highest for June on record, and the highest since 1996
  • Numerous sites, including several locations with at least 70 years of temperature observations, in the western WA and the Goldfields district, had their highest June mean maximum temperature on record
  • Western WA experienced a very warm start to June with temperatures persistently in the 20s to low 30s between the 3rd and 10th; several sites set their new record high June temperature
  • Frosty mornings with temperatures at or below 2 °C were observed in the South West Land Division in the second half of June, notably on the 20th, 21st and 25th; the lowest temperature was -3.2 °C at Salmon Gums Research Station on the 21st
  • It was a very warm start to the year (January–June) for Western Australia, and the statewide mean temperature was the fifth-highest on record for the January-June period
  • The statewide mean maximum temperature for the year to date was the fifth-highest on record; the statewide mean minimum temperature for the year to date was the eighth-highest on record

Severe wind gusts in the southwest coast

  • Cold fronts produced severe wind gusts in the southwest coastal sites on the 17th, 22nd , 23rd, 28th and 29th; Cape Leeuwin recorded gusts in excess of 110 km/h on those four occasions with the highest gust being 117km/h (63 knots) on the 17th

Further information

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Extremes in June 2020
Hottest day 36.7 °C at Kalumburu on the 1st
Warmest days on average 33.8 °C at Kalumburu
Coolest days on average 16.9 °C at Shannon
Coldest day 12.7 °C at Rocky Gully on the 18th
Coldest night -3.2 °C at Salmon Gums Res.Stn. on the 21st
Coolest nights on average 5.0 °C at Norseman Aero
Warmest nights on average 24.0 °C at Troughton Island
Warmest night 25.5 °C at Troughton Island on the 17th
Warmest on average overall 27.1 °C at Troughton Island
Coolest on average overall 12.3 °C at Collie East
12.3 °C at Salmon Gums Res.Stn.
12.3 °C at Wandering
Wettest overall 226.8 mm at Worsley Downs
Wettest day 90.2 mm at Bickley on the 29th
Strongest wind gust 117 km/h at Cape Leeuwin on the 17th

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 June temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Carnamah 29.0 on the 7th 27.8 on the 3rd in 1940 76 19.1
Mullewa 29.5 on the 5th 29.4 on the 4th in 1946 76 20.0
Badgingarra Research Stn 28.1 on the 5th 27.2 on the 28th in 1985 51 18.8
Jurien Bay 28.4 on the 5th 27.8 on the 1st in 2019 51 20.7
Murchison 31.0 on the 4th 29.7 on the 7th in 1998 30 21.8
Gosnells City 26.1 on the 4th = 26.1 on the 5th in 2017 29 19.8
Bickley 23.0 on the 4th 22.0 on the 12th in 2000 27 16.2
Dalwallinu 28.1 on the 5th 27.0 on the 1st in 2017 24 18.6
Morawa Airport 28.6 on the 5th 28.4 on the 5th in 2015 24 20.1
Shannon 22.3 on the 7th 22.1 on the 2nd in 2019 23 15.7
Katanning 23.1 on the 10th 23.0 on the 16th in 2004 22 16.1
North Island 27.1 on the 5th = 27.1 on the 3rd in 2012 20 22.3
Shark Bay Airport 30.7 on the 6th 30.3 on the 2nd in 2017 20 23.9



Record highest June mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Northam 20.9 = 20.9 in 2017 115 18.0
Salmon Gums Res.Stn. 19.4 19.3 in 2017 80 16.9
Kalgoorlie-Boulder Airport 20.2 20.0 in 1985 78 17.6
Mullewa 23.1 = 23.1 in 2017 75 20.0
Carnarvon Airport 26.2 25.8 in 2017 73 23.5
Port Hedland Airport 30.3 = 30.3 in 2015 71 27.6
Meekatharra Airport 23.3 22.6 in 1962 70 19.7
Ravensthorpe 19.7 19.4 in 2017 58 17.3
Eyre 21.7 21.4 in 2017 57 19.1
Wongan Hills 20.7 20.6 in 2017 52 18.2
Esperance 20.1 19.7 in 1985 51 18.1
Rottnest Island 20.4 20.1 in 2017 30 18.8
Laverton Aero 21.9 21.0 in 2015 28 18.5
Forrest 21.0 20.9 in 2015 27 19.1
Jacup 18.9 = 18.9 in 2017 26 16.9
Karratha Aero 28.4 28.3 in 2015 26 26.5
Perth Metro 21.4 = 21.4 in 2017 26 19.5
Leinster Aero 22.6 21.0 in 2017 25 19.2
Mount Magnet Aero 22.9 22.2 in 2017 24 19.9
Newman Aero 25.8 24.9 in 2004 23 23.0
Busselton Aero 19.1 = 19.1 in 2017 22 17.9
Hopetoun North 21.1 20.2 in 2017 22 19.0
Shannon 16.9 16.8 in 2017 22 15.7
Norseman Aero 20.2 19.8 in 2017 20 18.0
Witchcliffe 18.5 18.3 in 2017 20 17.5

Highest June mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
June
Eucla 20.7 21.4 in 1957* 18.7

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




Record highest June daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Rottnest Island 18.0 on the 11th = 18.0 on the 3rd in 2017 31 13.4
Gosnells City 17.9 on the 6th 17.3 on the 13th in 2000 29 9.8
Norseman Aero 14.8 on the 12th 14.4 on the 8th in 2004 21 4.7



Record highest June mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Badgingarra Research Stn 10.7 10.2 in 2004 51 8.4
Rottnest Island 15.0 14.5 in 2017 30 13.4
Bickley 9.8 9.2 in 2004 26 8.1
Jacup 7.9 7.8 in 1997 26 6.5
Perth Metro 10.7 10.6 in 2004 26 8.6
Swanbourne 12.8 12.6 in 2004 26 10.6
Bridgetown 7.1 7.0 in 2004 22 5.2
Katanning 8.4 8.1 in 2011 21 6.8
Witchcliffe 10.6 10.5 in 1999 20 8.8

Highest June mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
June
Perth Airport 11.1 11.5 in 1983 9.0
Pearce RAAF 11.3 11.8 in 1988 9.3
Wagin 8.1 8.5 in 1991* 6.2
Jandakot Aero 10.1 10.7 in 1991* 7.5
Narrogin 7.7 =7.7 in 1997* 6.3
Rocky Gully 8.7 =8.7 in 1997* 7.7

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




Record highest June mean temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Narrogin 12.9 12.8 in 1983 99 10.9
Dwellingup 13.0 12.9 in 1985 83 11.2
Perth Airport 16.2 16.1 in 1983 76 14.0
Meekatharra Airport 16.7 16.5 in 1962 70 14.3
Bencubbin 14.3 14.2 in 1983 66 12.4
Pearce RAAF 16.3 16.2 in 1983 59 14.1
Karnet 13.5 13.4 in 1983 54 11.9
Merredin 14.1 13.8 in 2015 54 12.1
Brookton 13.2 12.9 in 2015 52 11.4
Wongan Hills 14.9 14.6 in 2015 52 13.0
Badgingarra Research Stn 16.0 15.4 in 2017 49 13.6
Narembeen 13.8 13.3 in 2011 47 12.0
Kalbarri 19.1 18.7 in 2007 46 17.0
Wagin 13.1 12.9 in 2017 44 11.3
Rottnest Island 17.7 17.3 in 2017 30 16.1
Jandakot Aero 15.5 14.8 in 1991 29 13.3
Esperance Aero 14.3 14.0 in 2017 28 12.9
Laverton Aero 14.9 14.4 in 2015 28 12.7
Bickley 13.8 13.3 in 2017 26 12.1
Jacup 13.4 12.7 in 2017 26 11.7
Perth Metro 16.0 15.3 in 2015 26 14.0
Swanbourne 16.9 16.3 in 2015 26 15.1
Leinster Aero 15.1 14.9 in 2004 25 13.2
Bunbury 14.7 14.4 in 1997 24 13.2
Mount Magnet Aero 15.9 15.7 in 2015 24 14.1
Newdegate Research Station 12.4 12.2 in 2004 24 10.9
York 13.1 12.9 in 2004 24 11.6
Cunderdin Airfield 14.0 = 14.0 in 2004 23 12.2
Lake Grace 13.0 12.9 in 2017 23 11.7
Morawa Airport 15.6 = 15.6 in 2015 23 13.8
Rocky Gully 13.0 12.7 in 1996 23 11.7
Southern Cross Airfield 12.9 12.6 in 2011 23 11.3
Bridgetown 12.4 12.0 in 2004 22 11.0
Busselton Aero 14.1 13.7 in 2004 22 12.8
Hopetoun North 15.5 14.9 in 2004 22 13.8
Katanning 12.9 12.6 in 2017 21 11.5
Wandering 12.3 12.0 in 2011 21 10.8
Witchcliffe 14.6 13.9 in 1999 20 13.1

Highest June mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
June
Carnarvon Airport 19.5 19.8 in 1959 17.9
Mullewa 16.4 16.5 in 1949* 14.3
Beverley 13.5 13.8 in 1983* 12.0
Cape Naturaliste 16.0 16.3 in 1985 14.4
Esperance 15.0 15.1 in 1985 13.6
Northam 14.0 =14.0 in 1988* 12.2
Jarrahwood 12.8 13.1 in 1985* 11.3
Gingin Aero 15.3 17.1 in 1996 13.4

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




Summary statistics for June 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
June
2020
Diff
from
average
Highest for
June
2020
Mean for
June
2020
Diff
from
average
Lowest for
June
2020
Total for
June
2020
Average
for
June
Rank of
June
2020
Fraction of
June
average
North Kimberley (district 01)
Doongan 30.3 +1.0 33.0 14th 11.7 +0.1 7.0 5th 0 4.3 lowest 0%
Kalumburu 33.8 +2.1 36.7 1st 13.8 -0.6 8.2 6th 0 2.3 lowest 0%
Mount Elizabeth 30.1 +1.7 32.5 1st 8.5 -0.5 4.6 24th 0 11.0 lowest 0%
Troughton Island 30.2 +1.1 32.1 2nd 24.0 +0.6 22.2 7th 0 5.9 lowest 0%
Truscott 31.8 +1.5 35.0 1st 19.1 0.0 14.2 6th 0 2.7 v low 0%
Wyndham Aero 33.0 +1.5 36.3 14th 16.5 +0.6 11.9 30th 0 3.1 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 31.3 +1.8 34.9 14th 17.5 +1.3 13.9 26th 0 3.7 lowest 0%
Halls Creek Airport 28.5   32.2 14th 12.6   7.7 23rd 0
Kununurra Aero 31.8 +1.4 35.2 14th 14.8 -0.9 9.7 26th 0 3.0 lowest 0%
Warmun 30.8 +1.3 34.5 14th     15.5 7th 0 5.8 lowest 0%
West Kimberley (district 03)
Bidyadanga 32.0 +2.1 34.0 17th 15.9 +0.4 12.0 7th 0 19.1 lowest 0%
Broome Airport 30.9 +1.7 33.0 16th 15.1 -0.1 11.8 6th 0 18.2 lowest 0%
Curtin Aero 31.8 +1.0 34.4 15th 17.2 +0.6 10.7 27th 0 7.0 lowest 0%
Cygnet Bay 29.2 +0.5 30.7 17th 17.1 +0.5 13.7 12th 0 19.3 lowest 0%
Derby Aero 32.0 +1.3 34.2 15th 15.4 -0.3 10.7 26th 0 7.6 lowest 0%
Fitzroy Crossing Aero 31.2 +0.7 33.8 15th 13.1 +0.1 9.8 26th 0 6.6 lowest 0%
Yampi Sound (Defence) 32.6   35.2 15th 12.2   8.8 25th 0.2
De Grey (district 04)
Bedout Island 26.3 +0.6 28.1 10th 21.6 +0.7 20.1 8th
Karratha Aero 28.4 +1.9 31.3 29th 16.3 +1.2 12.5 7th 2.6 35.0 average 7%
Legendre Island 26.3 +1.1 27.8 12th 20.6 +1.2 18.1 7th
Mandora 31.0 +1.9 33.4 16th 13.8 -0.3 8.8 25th 0 16.8 lowest 0%
Marble Bar 29.7 +2.7 32.5 17th 13.6 +0.4 8.8 27th 0 22.3 lowest 0%
Pardoo Station 30.0 +1.6 32.2 16th     7.1 25th 0 26.6 lowest 0%
Port Hedland Airport 30.3 +2.7 32.4 16th 14.9 +0.7 10.1 27th 0 23.1 lowest 0%
Fortescue (district 05)
Barrow Island Airport 25.5 +1.2 26.7 18th 19.0 +0.2 15.7 7th 9.4 34.4 average 27%
Learmonth Airport 26.6 +1.8 28.8 3rd 14.3 +1.2 10.5 7th 5.6 42.9 low 13%
Mardie 30.6 +2.4 32.2 20th 15.6 +1.6 11.8 9th 1.6 37.1 low 4%
Onslow Airport 28.7 +2.7 31.4 19th 16.5 +2.2 12.6 8th 9.8 46.0 average 21%
Thevenard Island 26.9 +1.4 29.2 17th 19.3 +0.7 13.7 8th 5.4 37.0 low 15%
West Gascoyne (district 06)
Carnarvon Airport 26.2 +2.7 31.1 6th 12.9 +0.7 9.1 9th 16.8 46.2 low 36%
Murchison 24.4 +2.6 31.0 4th 7.9 +0.3 1.0 16th 10.4 29.1 low 36%
Shark Bay Airport 26.3 +2.4 30.7 6th 12.1 +0.4 8.3 10th 25.0 45.3 low 55%
East Gascoyne (district 07)
Newman Aero 25.8 +2.8 28.7 17th 9.0 +1.6 4.4 22nd 1.0 15.9 average 6%
Paraburdoo Aero 27.1 +2.0 29.8 17th 12.3 +1.0 8.2 27th 1.4 23.1 low 6%
Murchison (district 07A)
Meekatharra Airport 23.3 +3.6 27.1 4th 10.1 +1.3 4.5 16th 0 29.3 lowest 0%
Mount Magnet Aero 22.9 +3.0 27.9 10th 9.2 +0.9 3.5 14th 8.6 21.6 average 40%
Paynes Find 22.3 +2.9 28.3 5th 7.2 +0.6 1.7 20th 20.4 40.1 average 51%
North Coast (district 08)
Dalwallinu 21.0 +2.4 28.1 5th 8.3 +1.2 2.5 20th 35.8 34.6 average 103%
Geraldton Airport 24.2   30.9 5th 12.6   8.1 21st 47.6
Kalbarri 25.4 +2.4 30.2 5th 12.7 +1.6 7.9 16th 62.6 78.0 average 80%
Morawa Airport 22.5 +2.4 28.6 5th 8.6 +1.1 3.7 19th 20.4 40.7 average 50%
Mullewa 23.1 +3.1 29.5 5th 9.8 +1.2 6.2 14th 43.8 63.0 average 70%
North Island 23.9 +1.6 27.1 5th 17.1 +0.5 10.2 17th 39.8 61.7 low 65%
Wongan Hills 20.7 +2.5 26.3 4th 9.1 +1.4 4.0 20th 48.0 69.4 average 69%
Central Coast (district 09)
Badgingarra Research Stn 21.2 +2.4 28.1 5th 10.7 +2.3 6.2 20th
Bickley 17.8 +1.6 23.0 4th 9.8 +1.7 3.8 20th 224.0 198.1 average 113%
Garden Island HSF 20.5 +1.4 24.6 5th 13.3 +1.2 7.9 21st
Gingin Aero 21.4 +1.7 26.8 4th 9.3 +2.1 1.4 25th 7.6 109.1 lowest 7%
Jandakot Aero 21.0 +1.9 24.6 9th 10.1 +2.6 3.3 20th 101.4 152.4 low 67%
Karnet 18.3 +1.9 22.2 9th 8.9 +1.6 3.3 19th 179.1 209.6 average 85%
Lancelin 22.4 +2.1 28.3 4th 11.8 +1.0 6.8 20th 82.0 117.4 low 70%
Millendon (Swan Valley) 21.2   25.8 4th 10.3   3.3 25th 117.0
Pearce RAAF 21.4 +2.5 26.0 4th 11.3 +2.0 4.1 20th 110.8 130.7 average 85%
Perth Airport 21.3 +2.3 25.9 4th 11.1 +2.1 5.9 20th 100.0 155.1 low 64%
Perth Metro 21.4 +1.9 25.5 4th 10.7 +2.1 3.4 20th 115.4 127.3 average 91%
Rottnest Island 20.4 +1.6 22.9 9th 15.0 +1.6 10.8 18th 73.6 97.5 average 75%
Swanbourne 21.0 +1.5 24.9 5th 12.8 +2.2 6.1 20th 103.4 126.2 low 82%
South Coast (district 09A)
Albany 18.9 +2.2 23.4 8th 10.4 +1.3 6.0 20th 100.4 130.9 low 77%
Albany Airport 18.6   23.3 8th 9.1   2.1 20th 74.4
Bridgetown 17.8 +1.0 22.5 7th 7.1 +1.9 -1.0 21st 148.0 106.6 average 139%
Bunbury 19.5 +1.0 22.6 5th 9.9 +1.9 2.5 19th 152.2 136.9 average 111%
Busselton Aero 19.1 +1.2 22.2 5th 9.1 +1.5 2.3 21st 101.6 125.7 average 81%
Cape Leeuwin 18.8 +1.4 21.3 7th 13.5 +1.3 8.9 20th 85.6 174.0 v low 49%
Cape Naturaliste 19.4 +2.0 22.2 9th 12.7 +1.2 8.4 21st 85.6 160.8 v low 53%
Collie East 18.5 +1.1 22.8 7th 6.2 +1.9 -1.4 20th 147.6 107.6 high 137%
Donnybrook 19.4 +1.9 23.5 6th       168.6 187.0 average 90%
Dwellingup 18.1 +2.1 22.0 9th 7.9 +1.4 0.4 20th 166.6 235.3 low 71%
Esperance 20.1 +2.0 25.9 17th 10.0 +0.8 3.8 21st 52.2 76.9 low 68%
Esperance Aero 19.5 +2.1 25.1 17th 9.1 +0.6 3.3 21st 34.8 65.5 low 53%
Hopetoun North 21.1 +2.1 25.9 10th 9.8 +1.3 3.4 21st 12.0 47.4 lowest 25%
Jarrahwood 18.7 +1.4 23.0 6th 7.0 +1.7 -1.2 21st 143.6 157.1 average 91%
Mandurah 19.9 +1.2 24.1 5th 13.1 +1.6 7.5 20th 108.0 117.7 average 92%
North Walpole 18.0 +1.0 23.6 7th 10.5 +0.6 4.0 21st 134.0 159.6 average 84%
Rocky Gully 17.2 +1.5 21.9 7th 8.7 +1.0 4.0 19th 83.2 87.7 average 95%
Shannon 16.9 +1.2 22.3 7th 8.3 +0.7 2.8 21st 124.2 143.6 average 86%
Windy Harbour 18.8 +1.0 22.3 7th 10.0 +0.6 2.5 20th 115.2 169.2 low 68%
Witchcliffe 18.5 +1.0 21.6 3rd 10.6 +1.8 1.6 21st 41.6 169.5 lowest 25%
North Central (district 10)
Bencubbin 20.0 +2.5 25.7 10th 8.5 +1.3 4.4 20th 27.9 48.0 low 58%
Cunderdin Airfield 20.6 +2.1 27.2 10th 7.5 +1.6 1.8 25th 39.4 36.7 average 107%
Merredin 19.9 +2.5 26.0 10th 8.3 +1.6 2.2 19th 41.6 48.7 average 85%
Northam 20.9 +2.9 25.7 5th 7.2 +0.8 1.9 17th 51.6 78.2 low 66%
York 20.3 +1.8 24.0 10th 5.9 +1.2 -0.5 20th 55.0 59.4 average 93%
South Central (district 10A)
Beverley 19.7 +1.7 24.4 4th 7.2 +1.3 0.6 20th 62.8 76.8 average 82%
Brookton 19.2 +2.0 23.3 7th 7.2 +1.7 1.0 19th 53.6 83.7 average 64%
Corrigin 18.6 +2.1 24.0 10th 7.2 +1.4 2.0 20th 67.2 59.3 average 113%
Jacup 18.9 +2.0 24.0 10th 7.9 +1.4 2.2 20th 33.0 41.4 low 80%
Katanning 17.4 +1.3 23.1 10th 8.4 +1.6 2.3 21st 59.0 56.4 average 105%
Lake Grace 18.6 +1.6 23.8 17th 7.5 +1.1 2.5 21st 34.8 31.8 average 109%
Narembeen 20.0 +2.4 25.0 10th 7.9 +1.5 2.8 19th 36.8 50.6 average 73%
Narrogin 18.1 +2.6 22.5 7th 7.7 +1.4 -0.2 20th 55.2 85.1 low 65%
Newdegate Research Station 18.3 +1.5 23.9 10th 6.6 +1.6 0.3 25th 43.0 48.5 average 89%
Ravensthorpe 19.7 +2.4 24.5 10th     7.5 26th 25.4 43.1 low 59%
Wagin 18.3 +1.9 23.4 10th 8.1 +1.9 0.7 20th 50.3 71.3 average 71%
Wandering 18.4 +1.4 22.2 3rd 6.2 +1.6 -1.4 20th 74.0 81.2 average 91%
Eucla (district 11)
Balladonia 20.3 +2.2 25.0 27th 6.1 +0.3 -0.7 22nd 12.2 25.7 low 47%
Eucla 20.7 +2.0 27.1 29th 7.8 -0.4 4.1 10th 12.2 30.0 low 41%
Eyre 21.7 +2.6 28.7 28th 6.6 -0.1 -2.5 25th 15.7 39.1 low 40%
Forrest 21.0 +1.9 27.6 29th 5.2 -0.7 0.3 10th 8.8 14.7 average 60%
Red Rocks Point 20.2 +1.0 27.5 27th 8.5 -0.3 1.3 10th 0 30.3 v low 0%
South East (district 12)
Bulga Downs 22.4 +2.5 27.7 10th 6.0 -0.3 0.5 22nd 5.6 26.7 low 21%
Kalgoorlie-Boulder Airport 20.2 +2.6 25.6 17th 7.4 +1.1 1.5 25th 7.4 27.1 low 27%
Laverton Aero 21.9 +3.4 26.9 17th 7.9 +1.0 1.1 14th 2.6 14.6 low 18%
Leinster Aero 22.6 +3.4 27.5 17th 7.6 +0.4 1.2 14th 0.6 14.6 v low 4%
Leonora Aero 22.2 +2.9 27.7 11th 7.8 +0.7 2.7 19th 6.8 14.0 low 49%
Munglinup West 19.9 +2.2 26.1 11th 8.2 +0.5 3.7 21st 27.8 37.3 average 75%
Norseman Aero 20.2 +2.2 25.2 17th 5.0 +0.3 -1.6 21st 7.4 17.0 low 44%
Salmon Gums Res.Stn. 19.4 +2.5 25.2 17th 5.3 -0.3 -3.2 21st 17.0 37.9 low 45%
Southern Cross Airfield 20.1 +2.1 26.8 10th 5.7 +1.1 0.7 9th 27.6 27.3 average 101%
North East (district 13)
Carnegie 23.4 +2.2 28.0 29th 6.8 -0.4 2.4 21st 1.6 15.0 low 11%
Giles Meteorological Office 22.0 +1.7 26.0 30th 7.4 -0.6 2.0 22nd 0 17.8 lowest 0%
Telfer Aero 27.5 +2.1 30.2 18th 13.0 +1.1 8.8 26th 0 12.4 lowest 0%
Warburton Airfield 22.7 +2.0 28.2 12th 7.3 +0.7 0.4 23rd 2.0 17.7 average 11%
Wiluna Aero 23.6   28.4 17th 6.6   -0.9 16th 0.2
Offshore Islands (district 200)
Adele Island 27.8   29.2 16th 23.0   19.2 2nd
Browse Island 28.6   29.8 2nd 26.2   25.1 25th
Varanus Island 26.1 +1.3 27.3 28th 21.9 +1.0 20.7 8th 0.2 26.7 low 1%

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 10 am on Wednesday 1 July 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.

Further information

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