Western Australia in June 2015: Dry with record warm days

For Western Australia as a whole, it was a record warm June in terms of the mean maximum temperature, and also above average in terms of the mean minimum temperature. State-wide rainfall was below average, and it was the sixth driest June on record for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay).

  • Highest mean maximum temperature on record for WA
  • Above average mean minimum temperature for WA
  • Sixth driest June on record for the Lower Southwest

Below to very much below average rainfall was reported in much of the South West Land Division (SWLD) in June 2015, as well as in parts of the Kimberley, Pilbara, Northern and Southern Interior,where little or no rain fell. Pockets of above average rainfall were observed in the Gascoyne, Goldfields, western Eucla, and Southeast Coastal. When averaged across WA, rainfall was below average. Total rainfall averaged across the SWLD was also below average, whilst it was the sixth driest June for the Lower Southwest since comparable records commenced in 1900, due to a lack of frontal systems during the month. The month's only major rain event occured across western and southern WA from the 16th to 21st, associated with cloudbands, a cut-off low, and a strong cold front. As a result, Useless Loop on the Gascoyne coast and Munglinup in the Southeast Coastal district recorded their highest June daily rainfall on record, whilst a few sites in the Gascoyne and Southeast Coastal had their wettest June for at least 20 years. In contrast, a number of sites in western parts of the SWLD had their driest June on record, or their driest June for at least 20 years.

Mean maximum temperatures were above to very much above average across the whole State in June, with sites in most WA districts observing their warmest June days on record. Averaged across the State, the mean maximum temperature was over two degrees Celsius above the long-term average, and ranked as the warmest June since comparable records commenced in 1910. Similarly it was over two degrees Celsius warmer than normal averaged across the Lower Southwest, and was also its warmest June on record. An approaching cold front directed warm northwesterly winds over the SWLD on the 5th and resulted in many sites across the region registering their highest June temperature on record.

Mean minimum temperatures were above to very much above average across most of WA in June, with Warburton in the Southern Interior recording its warmest June nights on record. A number of sites had their highest June minimum temperature on record during the month, with unusually warm nights early in the month in the Lower West and South West, and from the 18th to 21st through much of the State.

When averaged across WA, the mean temperature was about 1.5 degrees Celsius above the long-term average, and ranked the third warmest June on record. Numerous sites observed their highest June mean temperature on record or highest June mean temperature for at least 20 years.

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Extremes in June 2015
Hottest day 36.3 °C at Fitzroy Crossing Aero on the 1st
Warmest days on average 33.1 °C at Derby Aero
Coolest days on average 16.6 °C at Shannon
Coldest day 10.0 °C at Mount Barker on the 22nd
Coldest night -2.0 °C at Yeelirrie on the 30th
Coolest nights on average 4.7 °C at York
Warmest nights on average 26.1 °C at Browse Island
19.9 °C at Truscott
Warmest night 27.2 °C at Browse Island on the 1st
24.4 °C at Kununurra Aero on the 2nd
Warmest on average overall 27.6 °C at Browse Island
26.0 °C at Truscott
Coolest on average overall 11.6 °C at Bridgetown
Wettest overall 183.2 mm at Northcliffe
Wettest day 132.0 mm at Steep Point on the 17th
Strongest wind gust102 km/h at Cape Leeuwin on the 2nd
102 km/h at Cape Leeuwin on the 21st

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 daily rainfall
New record
(mm)
Old
record
Years of
record
Useless Loop 109.1 on the 18th 98.4 on the 25th in 1986 28
Munglinup 34.0 on the 23rd 33.0 on the 13th in 1973 26



Record highest June total rainfall
New record
(mm)
Old
record
Years of
record
Average for
June
Useless Loop 174.1 153.9 in 2005 32 57.4

Highest June total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Years since
higher
Average for
June
Carey Downs 69.0 171.0 in 1980* 34 31.5
Salmon Gums Res.Stn. 67.6 74.0 in 1989 26 38.1
Mount Narryer 76.0 77.2 in 1992* 20 31.2

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




Record lowest June total rainfall
New record
(mm)
Old
record
Years of
record
Average for
June
Westbourne 22.0 24.4 in 2006 113 111.1
Grassmere 8.2 42.1 in 1944 110 139.0
Wilgarrup 15.5 42.9 in 1993 110 152.7
Aldervale 17.0 25.6 in 2006 107 112.6
Mallee Vale 11.2 15.0 in 2006 76 72.6
Worsley Downs 7.6 70.4 in 2010 20 179.3

Lowest June total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Years since
lower
Average for
June
Barrett Meadows 48.6 41.6 in 1944* 68 140.4
Warner Glen 88.4 75.8 in 1976 39 191.5
Kirup 27.0 21.8 in 1976* 36 176.7
Albany 53.2 52.4 in 1985* 29 132.3

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




Record highest June temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Kellerberrin 27.5 on the 5th 27.0 on the 28th in 1985 103 17.5
Corrigin 26.2 on the 5th 24.8 on the 1st in 1983 67 16.4
Merredin 26.7 on the 5th 26.5 on the 30th in 1985 50 17.3
Wongan Hills 27.5 on the 5th 26.0 on the 28th in 1985 48 18.2
Esperance 27.7 on the 5th 26.3 on the 1st in 1983 47 18.0
Narembeen 27.0 on the 5th 25.9 on the 2nd in 2012 44 17.5
Medina Research Centre 26.5 on the 11th 26.2 on the 3rd in 1984 30 19.4
Denham 30.0 on the 9th 29.5 on the 2nd in 2007 28 22.9
Esperance Aero 26.8 on the 5th 23.9 on the 1st in 2011 24 17.3
Jacup 24.8 on the 5th 24.2 on the 12th in 2000 22 16.8
Newdegate Research Station 25.9 on the 5th 24.0 on the 2nd in 2012 20 16.6
York 25.6 on the 5th 25.0 on the 10th in 2002 20 18.4



Record highest June mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Perth Metro* 21.0 20.6 in 1983 117 19.3
Northam 20.5 20.1 in 2001 110 17.9
Albany 18.8 = 18.8 in 1921 97 16.6
Narrogin 17.8 17.5 in 2001 94 15.5
Dwellingup 17.8 17.6 in 2006 78 16.0
Manjimup 17.1 16.8 in 1949 75 15.3
Perth Airport 21.0 20.7 in 1983 71 18.9
Pemberton 17.7 17.4 in 2007 70 15.9
Carnarvon Airport 25.5 25.4 in 2004 68 23.4
Corrigin 18.9 18.6 in 1985 66 16.4
Port Hedland Airport 30.3 29.9 in 2010 66 27.6
Bidyadanga 32.5 32.1 in 2010 56 29.8
Pearce RAAF 21.2 20.6 in 1983 54 18.8
Mandora 32.3 31.6 in 1970 53 29.0
Merredin 19.6 19.2 in 2001 49 17.3
Brookton 19.0 = 19.0 in 2001 47 17.1
Lancelin 22.9 21.7 in 1976 47 20.2
Ongerup 17.7 17.6 in 1985 47 16.0
Wongan Hills 20.3 19.8 in 1985 47 18.2
Beverley 19.9 19.7 in 2001 44 17.9
Narembeen 19.4 = 19.4 in 1985 43 17.5
Pingelly 18.3 17.9 in 2001 43 16.4
Yeelirrie 22.1 21.9 in 2002 42 19.5
Wagin 17.9 17.5 in 2006 40 16.4
Jarrahwood 18.6 18.2 in 2007 33 17.2
Medina Research Centre 20.9 20.8 in 2000 29 19.4
Carnegie 23.7 23.5 in 2012 25 21.1
Rottnest Island 19.7 = 19.7 in 1997 25 18.7
Jandakot Aero 20.7 19.8 in 2006 24 19.0
Laverton Aero 21.0 20.0 in 2002 23 18.3
Forrest 20.9 20.2 in 2008 22 19.0
Bickley 17.4 17.2 in 2001 21 16.1
Karratha Aero 28.3 = 28.3 in 2010 21 26.4
Pardoo Station 31.2 30.2 in 2010 21 28.2
Swanbourne 21.2 20.2 in 2006 21 19.4
Leinster Aero 21.0 20.9 in 2002 20 19.1

Highest June mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Years since
higher
Average for
June
Donnybrook 19.1 19.5 in 1949* 64 17.5
Meekatharra Airport 22.4 22.6 in 1962 53 19.7
Broome Airport 31.9 32.0 in 1970 45 29.1
Badgingarra Research Stn 20.6 20.9 in 1985* 28 18.7
Warburton Airfield 23.3 23.9 in 1975* 21 20.6

* 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
Carnarvon Airport 20.4 on the 18th 20.3 on the 4th in 1991 69 12.3
Dwellingup 16.0 on the 20th 15.7 on the 29th in 1985 57 6.5
Jandakot Aero 16.3 on the 3rd 16.2 on the 22nd in 2004 25 7.4
Laverton Aero 16.1 on the 21st 16.0 on the 1st in 2008 24 6.9
Bickley 15.0 on the 20th 14.0 on the 22nd in 2004 22 8.1
Swanbourne 17.1 on the 20th 17.0 on the 2nd in 1998 22 10.6
Leinster Aero 16.7 on the 21st 16.2 on the 2nd in 1998 21 7.3
Bunbury 17.3 on the 4th 16.2 on the 6th in 2012 20 8.0
Rocky Gully 13.4 on the 20th 13.1 on the 8th in 1997 20 7.7



Record highest June mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Warburton Airfield 10.1 9.2 in 2013 42 6.5
Christmas Island Aero 24.2 = 24.2 in 2014 40 23.3



Record highest June mean temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Albany 14.9 14.7 in 2014 97 12.8
Merredin 13.7 13.6 in 1988 49 12.0
Brookton 12.9 12.5 in 2004 47 11.3
Wongan Hills 14.6 14.3 in 1997 47 12.9
Badgingarra Research Stn 15.3 = 15.3 in 1983 44 13.5
Warburton Airfield 16.7 15.9 in 1970 42 13.5
Rottnest Island 16.9 = 16.9 in 2004 25 16.0
Esperance Aero 13.8 13.7 in 2014 23 12.9
Laverton Aero 14.6 14.0 in 2002 23 12.6
Bickley 13.2 13.0 in 2004 21 12.1
Jacup 12.7 = 12.7 in 2011 21 11.7
Swanbourne 16.3 16.2 in 2004 21 15.0

Highest June mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Years since
higher
Average for
June
Carnarvon Airport 19.4 19.8 in 1959 56 17.8
Mullewa 16.3 16.5 in 1949* 52 14.2
Meekatharra Airport 16.2 16.4 in 1983 32 14.2
Perth Airport 15.5 16.1 in 1983 32 13.9
Ongerup 12.5 12.7 in 1985* 29 11.4
Dwellingup 12.7 12.9 in 1985* 28 11.2
Manjimup 12.9 13.1 in 1985* 27 11.4
Perth Metro* 15.3 15.7 in 1992 23 13.9
Northam 13.5 13.8 in 1992 23 12.2

* 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 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
June
2015
Diff
from
average
Highest for
June
2015
Mean for
June
2015
Diff
from
average
Lowest for
June
2015
Total for
June
2015
Average
for
June
Rank of
June
2015
Fraction of
June
average
North Kimberley (district 01)
Doongan 30.3 +1.3 32.9 1st 11.0 -0.4 4.9 27th 0 5.0 lowest 0%
Kalumburu 32.9 +1.6 35.1 16th 14.4 +0.3 9.0 28th 0 2.9 v low 0%
Mount Elizabeth 29.6 +1.5 32.1 1st 8.6 -0.4 3.1 28th 0 12.0 lowest 0%
Troughton Island 30.4 +1.5 32.0 2nd 24.0 +0.7 20.9 29th 0 6.8 lowest 0%
Truscott 31.9 +2.1 33.9 3rd 19.9 +1.2 15.1 29th 0 3.8 v low 0%
Wyndham Aero 32.9 +1.9 35.8 1st 17.0 +1.5 10.7 22nd 0 3.6 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 30.8 +1.6 33.6 17th 17.5 +1.6 12.0 27th 0 4.3 lowest 0%
Halls Creek Airport 28.6 +1.4 31.6 1st 14.6 +1.0 9.8 28th 0 5.3 lowest 0%
Kununurra Aero 31.7 +1.5 34.9 17th 15.5 -0.3 9.4 27th 0 3.4 lowest 0%
Warmun 31.0 +1.5 34.3 1st 15.8 +2.1 7.6 22nd 0 6.1 lowest 0%
West Kimberley (district 03)
Bidyadanga 32.5 +2.7 36.1 18th 17.1 +1.7 13.5 22nd 0 19.8 lowest 0%
Broome Airport 31.9 +2.8 35.5 18th 15.5 +0.3 10.8 27th 0 19.3 lowest 0%
Curtin Aero 32.6 +2.0 35.6 2nd 17.5 +1.0 11.2 22nd 0 8.7 lowest 0%
Cygnet Bay 29.4 +0.7 32.4 2nd 16.5 -0.1 12.1 29th 0 21.2 lowest 0%
Derby Aero 33.1 +2.7 36.0 3rd 16.0 +0.3 10.2 29th 0 8.3 lowest 0%
Fitzroy Crossing Aero 32.3 +2.1 36.3 1st 13.8 +1.0 8.0 28th 0 8.6 v low 0%
De Grey (district 04)
Bedout Island 26.5   28.5 19th 21.4   19.7 29th
Karratha Aero 28.3 +1.9 31.2 2nd 15.3 +0.3 9.6 30th 0 34.0 lowest 0%
Legendre Island 26.4   30.3 19th 19.7   17.3 29th
Mandora 32.3 +3.3 36.0 2nd 14.6 +0.5 10.7 26th 0 17.6 lowest 0%
Marble Bar 29.1 +2.4 32.5 19th 13.7 +0.6 9.0 28th 3.8 24.5 average 16%
Pardoo Station 31.2 +3.0 33.7 19th       0.8 26.7 average 3%
Port Hedland Airport 30.3 +2.7 34.2 20th 15.3 +1.1 9.8 30th 0 23.5 lowest 0%
Roebourne Aero 29.6 +1.7 32.6 21st 13.8 +0.5 8.5 30th 0 32.8 v low 0%
Fortescue (district 05)
Barrow Island Airport 25.5 +1.3 30.1 17th 19.0 +0.3 14.9 29th 0.8 34.8 low 2%
Learmonth Airport 25.7 +0.9 29.5 6th 13.5 +0.4 8.6 24th 41.2 42.0 average 98%
Mardie 29.7 +1.6 31.9 4th 14.1 +0.2 10.3 30th 0.2 37.7 low 1%
Onslow Airport 28.3 +2.4 31.4 6th 15.9 +1.7 12.0 23rd 4.6 45.5 low 10%
Wittenoom 26.1 +1.7 30.1 20th 13.2 +0.4 7.1 24th 0 27.9 lowest 0%
West Gascoyne (district 06)
Carnarvon Airport 25.5 +2.1 31.2 8th 13.1 +0.8 8.1 25th 46.4 46.8 average 99%
Denham 23.7 +0.8 30.0 9th 14.5 +0.6 10.5 24th 37.2 54.3 average 69%
Emu Creek Station 28.1 +2.1 32.2 6th 12.7 0.0 8.0 24th 22.3 36.5 average 61%
Murchison 23.4 +1.6 28.5 5th 9.1 +1.6 4.0 26th 37.4 27.6 high 136%
Shark Bay Airport 24.8 +1.0 29.5 9th 12.4 +0.6 8.0 1st 84.6 46.2 high 183%
East Gascoyne (district 07)
Newman Aero 24.6 +1.7 29.1 20th 9.1 +2.1 2.5 30th 0.4 14.5 low 3%
Paraburdoo Aero 26.6 +1.5 30.9 20th 10.8 -0.3 5.8 30th 0.2 22.6 low 1%
Murchison (district 07A)
Meekatharra Airport 22.4 +2.7 26.7 7th 10.0 +1.3 5.4 25th 25.8 29.9 average 86%
Mount Magnet Aero 21.9 +2.1 26.5 5th 9.5 +1.3 4.3 26th 17.4 19.9 average 87%
Paynes Find 21.6 +2.3 27.1 5th 7.7 +1.0 1.4 23rd 16.1 40.9 low 39%
North Coast (district 08)
Dalwallinu 19.9 +1.3 27.0 5th 8.0 +0.9 3.3 25th 55.4 31.9 v high 174%
Geraldton Airport 23.3   29.6 9th 11.3   6.0 23rd 52.8
Kalbarri 24.1 +1.2 28.6 9th 12.5 +1.5 7.4 24th 70.7 78.8 average 90%
Morawa Airport 22.0 +2.0 28.4 5th 9.1 +1.7 3.5 23rd 29.6 38.3 average 77%
Mullewa 22.4 +2.4 28.0 5th 10.2 +1.7 6.4 23rd 38.6 63.6 low 61%
North Island 23.1 +0.8 26.3 9th 16.9 +0.3 10.0 30th 41.2 60.9 low 68%
Wongan Hills 20.3 +2.1 27.5 5th 8.9 +1.2 2.1 23rd 35.5 70.1 low 51%
Central Coast (district 09)
Badgingarra Research Stn 20.6 +1.9 25.8 11th 9.9 +1.5 4.5 23rd 66.6 100.5 low 66%
Bickley 17.4 +1.3 21.9 11th 9.0 +0.9 3.8 23rd 132.6 199.3 low 67%
Garden Island HSF 20.0 +1.0 23.3 11th 12.9 +0.8 6.7 23rd 54.2 109.1 low 50%
Gingin Aero 20.9 +1.3 24.7 11th 7.6 +0.3 -0.6 23rd 65.2 112.8 low 58%
Gosnells City     25.6 11th     4.0 23rd 88.6 169.0 low 52%
Jandakot Aero 20.7 +1.7 25.0 11th 8.2 +0.8 0.4 23rd 82.4 156.6 low 53%
Karnet 17.8 +1.4 22.4 11th 8.7 +1.4 0.2 23rd 134.6 210.4 low 64%
Lancelin 22.9 +2.7 27.0 10th     7.0 14th 40.0 117.9 v low 34%
Medina Research Centre 20.9 +1.5 26.5 11th 10.1 +1.2 1.0 23rd 53.8 140.8 v low 38%
Pearce RAAF 21.2 +2.4 25.4 11th 9.6 +0.2 2.8 23rd 64.6 132.3 low 49%
Perth Airport 21.0 +2.1 24.9 11th 10.0 +1.0 1.8 23rd 92.4 158.2 low 58%
Perth Metro* 21.0 +1.7 25.1 11th 9.6 +1.1 2.3 23rd 100.4 126.7 average 79%
Rottnest Island 19.7 +1.0 22.2 3rd 14.2 +0.9 9.2 23rd 58.4 98.1 low 60%
Swanbourne 21.2 +1.8 24.6 11th 11.4 +0.8 4.3 23rd 109.6 124.2 average 88%
South Coast (district 09A)
Albany 18.8 +2.2 23.0 4th 10.9 +1.8 5.0 24th 53.2 132.3 v low 40%
Albany Airport 18.3   22.2 4th 8.6   2.3 23rd 51.0
Bridgetown 17.5 +0.8 20.9 4th 5.7 +0.5 -1.2 24th 69.4 108.0 low 64%
Bunbury 19.2 +0.8 22.5 10th 8.8 +0.8 0.5 23rd 48.2 137.4 low 35%
Busselton Aero 18.5 +0.6 21.6 5th 8.5 +0.9 0.1 23rd 64.6 128.8 low 50%
Cape Leeuwin 18.5 +1.1 21.9 19th 13.5 +1.3 9.9 28th 100.0 175.5 low 57%
Cape Naturaliste 18.4 +1.1 22.1 4th 12.1 +0.6 6.8 23rd 54.0 163.5 v low 33%
Collie East 18.5 +1.3 22.2 11th 5.0 +0.7 -1.9 24th 58.4 112.5 low 52%
Donnybrook 19.1 +1.6 22.3 10th 8.1 +1.4 0.0 23rd 72.0 189.2 v low 38%
Dwellingup 17.8 +1.8 22.2 11th 7.5 +1.0 -0.4 23rd 116.4 238.7 low 49%
Esperance 19.2 +1.2 27.7 5th 9.7 +0.5 4.8 24th 52.2 78.6 low 66%
Esperance Aero 18.4 +1.1 26.8 5th 9.1 +0.6 5.4 24th 60.8 66.5 average 91%
Hopetoun North 18.4 -0.6 24.8 5th 7.9 -0.6 3.5 25th 75.8 48.4 high 157%
Jarrahwood 18.6 +1.4 22.0 10th 6.1 +0.8 -1.4 24th 99.0 159.4 low 62%
Mandurah 19.7 +1.1 23.3 9th 12.3 +0.8 5.3 23rd 65.6 119.6 low 55%
Manjimup 17.1 +1.8 21.3 5th 8.7 +1.3 2.3 24th 101.4 163.5 low 62%
North Walpole 17.9 +1.0 21.7 4th 10.8 +1.0 5.7 27th 132.6 166.6 average 80%
Pemberton 17.7 +1.8 21.5 4th       115.4 189.4 v low 61%
Rocky Gully 16.7 +1.1 20.4 5th 8.4 +0.7 1.6 23rd 74.4 89.3 low 83%
Shannon 16.6 +1.0 20.2 5th 8.6 +1.0 1.6 29th 108.4 145.7 average 74%
Windy Harbour 18.7 +1.0 22.3 11th 10.5 +1.0 2.6 28th 146.3 172.6 average 85%
Witchcliffe 17.9 +0.4 21.7 4th 9.5 +0.7 2.1 28th 100.2 172.4 low 58%
North Central (district 10)
Bencubbin 19.3 +1.9 25.7 5th 8.3 +1.1 2.3 23rd 7.2 48.4 v low 15%
Cunderdin Airfield 20.6 +2.2 27.4 5th 7.1 +1.2 1.0 23rd 23.8 36.4 average 65%
Merredin 19.6 +2.3 26.7 5th 7.9 +1.2 1.6 23rd 44.2 49.1 average 90%
Northam 20.5 +2.6 25.9 5th 6.5 0.0 0.2 23rd 26.7 79.2 v low 34%
York 20.2 +1.8 25.6 5th 4.7 +0.1 -0.8 25th 31.5 59.9 low 53%
South Central (district 10A)
Beverley 19.9 +2.0 24.2 5th 6.2 +0.3 -0.4 23rd 26.4 77.9 v low 34%
Brookton 19.0 +1.9 23.1 11th 6.7 +1.2 0.2 23rd 33.2 85.0 v low 39%
Corrigin 18.9 +2.5 26.2 5th 5.9 0.0 0.4 25th 27.0 59.9 low 45%
Hyden 19.2 +1.8 25.6 5th 5.9 +0.3 0.5 24th 35.6 48.8 average 73%
Jacup 17.9 +1.1 24.8 5th 7.5 +1.0 2.4 24th 41.2 39.6 average 104%
Katanning 17.5 +1.5 22.1 11th 7.6 +0.8 1.9 24th 70.4 58.6 average 120%
Lake Grace 18.1 +1.2 24.7 5th 7.4 +1.1 1.8 15th 43.6 31.0 high 141%
Narembeen 19.4 +1.9 27.0 5th 6.9 +0.5 1.9 15th 35.2 51.5 average 68%
Narrogin 17.8 +2.3 22.4 5th 6.3 -0.1 -0.2 23rd 57.4 85.7 low 67%
Newdegate Research Station 18.3 +1.7 25.9 5th 5.5 +0.4 -0.1 25th 38.8 48.9 average 79%
Ongerup 17.7 +1.7 23.0 5th 7.2 +0.5 2.0 24th 34.4 48.9 average 70%
Pingelly 18.3 +1.9 23.0 11th 6.9 +0.3 0.8 23rd 40.2 81.3 low 49%
Ravensthorpe 18.2 +1.0 25.7 5th 8.9 +1.0 4.5 2nd 56.7 43.4 high 131%
Wagin 17.9 +1.5 22.1 11th 6.8 +0.6 0.7 23rd 38.4 71.9 low 53%
Wandering 18.4 +1.5 22.7 11th 5.0 +0.5 -1.7 23rd 48.0 72.4 low 66%
Eucla (district 11)
Balladonia 19.5 +1.5 26.0 5th 6.3 +0.4 1.0 26th 29.8 25.9 average 115%
Eucla 19.6 +0.9 27.7 6th 8.4 +0.2 2.6 30th 27.8 30.1 average 92%
Eyre 20.9 +1.9 28.8 6th 5.6 -1.2 -1.3 25th 28.0 39.7 average 71%
Forrest 20.9 +1.9 29.5 21st 6.5 +0.4 1.4 30th 13.4 15.6 average 86%
Red Rocks Point 19.6 +0.4 28.4 6th 9.3 +0.4 3.0 26th 9.2 32.9 v low 28%
South East (district 12)
Bulga Downs 21.7 +1.9 26.9 6th 7.0 +0.7 1.1 30th 38.2 27.2 high 140%
Kalgoorlie-Boulder Airport 19.5 +2.0 25.4 6th 7.2 +1.0 1.5 26th 15.8 27.7 average 57%
Laverton Aero 21.0 +2.7 25.6 7th 8.0 +1.1 2.8 24th 2.2 14.7 low 15%
Leinster Aero 21.0 +1.9 25.8 7th 7.6 +0.3 1.2 30th
Leonora Aero 21.1   25.9 6th 7.9   1.6 29th 19.8
Munglinup West 18.5 +1.0 27.5 5th 8.6 +0.9 5.1 24th 61.0 38.2 high 160%
Norseman Aero 19.0 +1.0 25.4 5th 5.9 +1.2 -1.1 26th 20.6 15.5 high 133%
Salmon Gums Res.Stn. 18.6 +1.7 26.6 5th 6.6 +0.9 -0.7 1st 67.6 38.1 high 177%
Southern Cross Airfield 19.2 +1.3 26.4 5th 5.6 +1.1 -0.3 26th 33.8 26.7 average 127%
Yeelirrie 22.1 +2.6 27.0 6th     -2.0 30th 14.6 22.7 average 64%
North East (district 13)
Balgo Hills 28.0 +1.9 31.9 3rd 13.9 +1.2 9.1 26th 0 9.1 lowest 0%
Carnegie 23.7 +2.6 29.1 20th 8.5 +1.5 3.0 26th 0 14.7 lowest 0%
Giles Meteorological Office 22.1 +1.9 25.5 21st 9.5 +1.5 4.1 28th 1.2 17.1 average 7%
Telfer Aero 28.1 +2.9 32.1 19th 13.3 +1.4 8.1 27th 0.2 13.6 low 1%
Warburton Airfield 23.3 +2.7 28.5 21st 10.1 +3.6 3.8 23rd 0.2 17.3 low 1%
Offshore Islands (district 200)
Adele Island 29.2   30.4 4th 23.1   19.5 29th
Browse Island 29.1   30.4 4th 26.1   24.2 22nd
Christmas Island Aero 27.6 +0.6 28.3 6th 24.2 +0.9 22.1 29th 43.0 166.0 average 26%
Cocos Island Airport 29.0 +0.4 30.0 6th 25.1 +0.6 22.2 20th 125.8 210.8 low 60%

* note:Observations for Perth Metro are taken from the current Mount Lawley site, which opened in February 1993. Comparisons are made combined data from current site and the Perth Regional Office site, which ran from 1876 to early 1992.


Notes

The Monthly climate summary 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 11 am on Wednesday 1 July 2015. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

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