Western Australia in April 2017: Dry and warm in the west

Rainfall was below average to very much below average near the west coast and in the South West Land Division in April, while above average rainfall was reported in areas from the west Kimberley and east Pilbara to the Southern Interior. Mean maximum temperatures were above to very much above average in western parts of the State, while areas in the east Pilbara and adjacent Northern Interior saw below average maxima. Mean minma showed a mixed pattern across the State with large parts of WA close to average. For WA as a whole, mean maximum temperature and the mean minimum temperature averaged across the State for April were both near average.

Dry in the west; above average rainfall in the interior

  • Rainfall for WA was 9% above average
  • Rainfall for the South West Land Division (SWLD) was the eighth-lowest on record and the driest for 16 years; numerous sites, particularly in the west recorded little or no rainfall
  • A dozen sites in the SWLD had their driest April on record
  • Some sites in the Central Wheat Belt had their driest April since 1994 or 1982; some sites in the Lower West and South West had their driest April since 1982
  • An upper level trough and surface troughs produced lines of thunderstorms in central WA and the SWLD from the 22nd to 24th; 155 mm on the 23rd at Mettler (South Coastal) was a new daily rainfall record for any month in 51 years of recording at the site, and the highest daily fall for the month in WA
  • Newman Aerodrome recorded its wettest April on record due to thunderstorms producing moderate falls in the second half of the month

Warm in the west

  • Mean maximum temperature for WA was 0.15 °C above average
  • Mean maximum temperature for the SWLD was 1.65 °C above average, and the warmest April for four years
  • Mean daytime temperatures were 3 °C to 4 °C above average in the southwest Gascoyne; Denham had its hottest April day on record on the 3rd and equal warmest April on record, while Carnarvon Airport recorded its second highest April temperature of 40.2 °C on the 10th and registered its warmest April for 23 years
  • Mean minimum temperature for WA was 0.33 ° below average, lowest for eleven years since 2006
  • Clear skies and calm conditions following a burst of cool southerly air resulted in a very cold morning in southern parts of the SWLD on the 8th with temperatures dropping to 0.5 °C (the State low for the month); Newdegate Research Station recorded its lowest temperature in April in 21 years of record

Tropical cyclone Frances and Greg

  • A tropical low intensified and was named tropical cyclone Frances in the Timor Sea north of WA on the 27th. Frances remained north of WA and had little impact on Kimberley communities
  • Tropical cyclone Greg formed west of Christmas Island, well off the northwest Western Australia on the 30th, and had not direct impact on the mainland

Third highest wet season rainfall in Kimberley

  • Kimberley recorded area-averaged 1188 mm this west season (October 2016-April 2017), which was third-highest wet season rainfall on record for Kimberley, behind 2011 and 2000
  • Two tropical cyclones TC Yvette and TC Blance had direct impact to the Kimberley during the wet season

Further information

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Extremes in April 2017
Hottest day 40.2 °C at Carnarvon Airport on the 10th
Warmest days on average 36.1 °C at Mandora
36.1 °C at Wyndham Aero
Coolest days on average 20.1 °C at Albany
Coldest day 15.4 °C at Rocky Gully on the 23rd
Coldest night 0.5 °C at Jarrahwood on the 8th
Coolest nights on average 7.2 °C at Jarrahwood
Warmest nights on average 27.8 °C at Browse Island
24.5 °C at Barrow Island Airport
24.5 °C at Truscott
Warmest night 29.3 °C at Browse Island on the 27th
Warmest on average overall 30.1 °C at Troughton Island
29.6 °C at Wyndham Aero
Coolest on average overall 15.4 °C at Rocky Gully
Wettest overall 184.7 mm at Mettler
Driest overall 0 mm at Perth Metro & others
Wettest day 155.0 mm at Mettler on the 23rd
Strongest wind gust 104 km/h at Newman Aero on the 23rd

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 April daily rainfall
New record
(mm)
Old
record
Years of
record
Spring Valley 82.8 on the 24th 62.0 on the 4th in 1974 58
Mettler 155.0 on the 23rd 103.0 on the 1st in 2005 51



Record highest April total rainfall
New record
(mm)
Old
record
Years of
record
Average for
April
Newman Aero 106.8 89.6 in 1997 42 22.2

Highest April total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
April
Spring Valley 82.8 93.8 in 1966* 26.2

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




Record lowest April total rainfall
New record
(mm)
Old
record
Years of
record
Average for
April
Dwellingup 0.0 0.4 in 1977 84 65.8
Cowaramup 2.3 3.0 in 1982 79 67.9
Pearce RAAF 0.0 0.4 in 1982 63 34.8
Lancelin 0.0 0.6 in 1977 50 31.1
Pinjarra Refinery 0.0 0.2 in 2009 33 43.3
Huntly 0.0 1.2 in 2001 27 59.1
Nunile 0.2 0.4 in 1994 27 24.6
Rottnest Island 0.0 3.8 in 2001 25 34.2
Swanbourne 0.4 5.6 in 2009 23 39.7
York 1.1 2.2 in 2004 21 22.4
Dalwallinu 0.0 0.4 in 2001 20 13.8
Gingin Aero 0.2 4.6 in 2004 20 28.4

Lowest April total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
April
Perth Metro 0.0 0.0 in 1982 44.0
Perth Airport 0.0 0.0 in 1982 41.1
Warner Glen 4.2 2.6 in 1977 61.8
Bannister 0.4 0.0 in 1982 34.4
Bickley 0.4 0.0 in 1982 55.6
Margaret River 5.0 4.0 in 1982 66.7
Northam 0.1 0.0 in 1982 23.4
Cape Naturaliste 2.0 0.2 in 1982* 43.4
Culford 0.2 0.0 in 1982* 36.5
Jarrahdale 2.2 0.0 in 1982* 60.6
Chapman Hill 0.4 0.0 in 1982* 41.9
Bulyee 0.4 0.0 in 1982* 23.3
Wilgarrup 1.8 0.0 in 1991* 52.2
Badgebup 1.8 0.7 in 1994 28.1
Beverley 0.2 0.0 in 1994 23.4
Brookton 2.4 0.0 in 1994 26.0
Wundi 0.4 0.0 in 1994 22.2
Borden 6.0 3.4 in 1995 24.7
Highfields 0.8 0.0 in 1994* 22.7

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




Record highest April temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Denham 39.5 on the 3rd 38.8 on the 2nd in 1998 30 28.6



Highest April mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
April
Carnarvon Airport 31.6 32.0 in 1994 29.1



Record lowest April temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Troughton Island 22.3 on the 29th = 22.3 on the 24th in 1970 38 26.9
Newdegate Research Station 1.2 on the 8th 1.9 on the 2nd in 2014 21 10.3



Record lowest April mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Eyre 9.3 9.4 in 2015 57 11.8

Lowest April mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
April
Salmon Gums Res.Stn. 8.6 7.9 in 1963* 10.0

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




Summary statistics for April 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2017
Diff
from
average
Highest for
April
2017
Mean for
April
2017
Diff
from
average
Lowest for
April
2017
Total for
April
2017
Average
for
April
Rank of
April
2017
Fraction of
April
average
North Kimberley (district 01)
Kalumburu 34.3 -0.6 36.8 9th 21.6 +0.6 18.0 10th 7.6 34.4 average 22%
Troughton Island 32.8 0.0 34.8 10th 27.3 +0.4 22.3 29th 11.6 30.2 average 38%
Truscott 32.9 -0.6 35.5 9th 24.5 +0.4 19.6 29th 6.0 76.8 low 8%
Wyndham Aero 36.1 -0.6 38.6 26th 23.1 -0.3 18.9 4th 5.8 26.4 average 22%
East Kimberley (district 02)
Argyle Aerodrome 34.4 -0.6 36.8 26th 23.1 +0.2 18.9 29th 1.8 25.7 average 7%
Halls Creek Airport 33.5   36.5 9th 19.7   13.7 4th 2.0
Kununurra Aero 34.7 -0.7 37.0 21st 21.9 0.0 17.5 5th 21.8 30.7 average 71%
Warmun 34.6 -0.6 37.2 22nd 21.2 +0.6 16.5 4th 1.4 25.3 average 6%
West Kimberley (district 03)
Bidyadanga 35.7 0.0 39.5 9th 22.2 +0.1 17.9 30th 30.4 25.0 high 122%
Broome Airport 34.3 0.0 38.0 9th 23.0 +0.3 18.5 6th 19.2 25.8 average 74%
Curtin Aero 34.9 -1.6 38.3 9th 23.1 +0.9 17.5 6th 41.6 40.8 average 102%
Cygnet Bay     32.7 1st 23.9 +1.5 19.0 4th 52.7 41.3 high 128%
Derby Aero 35.7 0.0 39.1 9th 23.2 +0.4 18.4 5th 21.4 24.6 average 87%
Fitzroy Crossing Aero 35.9 -0.8 39.0 9th 20.5 -0.3 13.0 12th 10.2 29.3 average 35%
De Grey (district 04)
Karratha Aero 33.4 -0.9 36.6 11th 22.4 -0.3 18.3 14th 35.0 17.6 high 199%
Mandora 36.1 0.0 40.0 9th 21.6 +0.8 13.7 13th 9.6 19.2 average 50%
Marble Bar 34.0 -2.2 37.0 9th 20.9 -1.2 16.7 6th 20.2 21.9 average 92%
Port Hedland Airport 33.5 -1.7 37.5 9th 21.7 +0.2 16.9 13th 38.4 22.1 high 174%
Roebourne Aero 34.3 -1.9 38.9 9th 21.0 -0.8 16.4 14th 15.8 9.2 average 172%
Fortescue (district 05)
Barrow Island Airport 31.3 +0.2 33.4 11th 24.5 -0.1 22.1 21st 0.6 35.5 low 2%
Learmonth Airport 34.3 +1.1 37.8 10th 20.4 0.0 16.6 17th 1.8 17.8 average 10%
Mardie 35.3 -0.6 40.1 10th 21.2 +0.1 17.5 19th 0.8 19.4 average 4%
Onslow Airport 34.2 +0.4 37.3 10th 22.1 +0.7 18.0 30th 0.2 11.6 low 2%
Wittenoom 31.7 -1.5 35.1 9th 19.9 -1.3 14.8 30th 27.4 28.1 average 98%
West Gascoyne (district 06)
Carnarvon Airport 31.6 +2.5 40.2 10th 19.6 +0.4 15.2 30th 0.8 13.3 low 6%
Denham 30.3 +1.7 39.5 3rd 19.7 -0.1 16.5 18th 0 13.9 lowest 0%
Emu Creek Station 34.8 -0.1 39.2 10th 20.1 -0.7 15.7 30th 17.5 20.8 average 84%
Murchison 32.0 +1.1 36.5 4th 16.9 +0.6 10.5 30th 46.3 21.4 high 216%
Shark Bay Airport 32.9 +2.0 39.9 10th 19.0 +0.7 14.4 19th 0 9.2 v low 0%
East Gascoyne (district 07)
Newman Aero 30.9 -0.9 34.7 8th 16.3 -1.2 11.0 30th 106.8 22.2 highest 481%
Paraburdoo Aero 33.6 +0.1 36.1 8th 18.7 -1.0 15.0 30th 10.4 25.4 average 41%
Murchison (district 07A)
Meekatharra Airport 29.8 +0.5 34.0 15th 16.8 -0.3 11.7 30th 1.6 19.0 low 8%
Mount Magnet Aero 29.8 +1.0 35.9 15th 16.2 -0.1 10.5 28th 9.4 18.8 average 50%
Paynes Find 29.8 +1.4 34.9 16th 13.4 -0.9 7.0 28th 1.6 25.6 low 6%
North Coast (district 08)
Dalwallinu 27.9 +0.9 33.3 11th 12.7 -0.6 8.1 8th 0 13.8 lowest 0%
Geraldton Airport 29.7   37.1 2nd 14.1   8.2 30th 0.2
Kalbarri 31.4 +2.0 38.7 2nd 17.1 +0.8 11.9 29th 0 19.7 lowest 0%
Morawa Airport 30.0 +1.2 35.5 3rd 13.5 -1.0 8.5 28th 15.0 18.6 average 81%
Mullewa 30.9 +2.2 36.0 3rd 16.2 +1.1 11.7 30th 0 21.5 lowest 0%
North Island 26.6 +0.3 30.8 2nd 20.9 +0.5 19.2 19th 3.0 17.5 low 17%
Wongan Hills 27.7 +1.3 33.2 5th 12.7 -0.7 8.0 8th 20.8 22.6 average 92%
Central Coast (district 09)
Badgingarra Research Stn 28.1 +1.0 33.9 3rd 13.7 +0.1 10.4 8th 1.0 27.5 v low 4%
Bickley 24.8 +1.3 29.7 3rd 12.2 -0.5 6.8 8th 0.4 55.6 v low 1%
Garden Island HSF 23.1 -0.8 30.0 2nd 15.2 -0.9 11.9 8th 0 38.4 v low 0%
Gingin Aero 28.0 +1.4 32.8 3rd 10.1 -2.1 3.7 8th 0.2 28.4 lowest 1%
Gosnells City 27.8 +1.4 32.8 3rd     8.9 30th 0 43.2 lowest 0%
Jandakot Aero 26.8 +1.1 32.0 3rd 11.7 -0.8 4.3 8th 1.0 41.8 v low 2%
Jurien Bay 26.7 +0.3 34.7 2nd 12.2 -1.8 7.2 9th 1.1 30.1 v low 4%
Lancelin 25.4 -0.1 33.0 1st 12.6 -2.0 9.0 29th 0 31.1 lowest 0%
Pearce RAAF 28.3 +1.9 33.1 3rd 11.2 -2.2 5.0 30th 0 34.8 lowest 0%
Perth Airport 27.5 +1.9 32.6 3rd 12.1 -0.9 6.2 30th 0 40.5 lowest 0%
Perth Metro 27.0 +1.1 31.8 3rd 12.9 -0.9 8.3 26th 0 44.0 lowest 0%
Rottnest Island 23.3 -0.5 30.0 2nd 16.8 -0.5 13.0 8th 0 34.2 lowest 0%
Swanbourne 24.9 -0.5 31.5 2nd 14.5 -0.8 10.4 8th 0.4 39.7 lowest 1%
South Coast (district 09A)
Albany 20.1 -0.8 27.4 2nd 14.3 +1.5 10.8 13th 51.3 68.8 average 75%
Albany Airport 21.3   29.3 11th 10.6   5.4 13th 31.2
Bridgetown 23.6 +0.2 29.6 2nd 8.3 -1.1 1.1 8th 2.2 49.1 v low 4%
Bunbury     29.4 2nd 10.5 -1.3 3.5 8th 0 37.4 lowest 0%
Busselton Aero 24.2 +0.2 28.3 1st 9.9 -1.2 3.7 25th 0.4 34.0 low 1%
Cape Leeuwin 21.0 -0.3 29.3 2nd 15.8 +0.3 12.8 9th 6.8 59.1 v low 12%
Cape Naturaliste 23.6 +1.7 28.0 3rd 13.4 -0.5 9.4 13th 2.0 43.4 v low 5%
Collie East 25.0 +1.3 29.6 2nd 7.5 -1.5 0.8 8th 0 43.9 v low 0%
Dwellingup 24.8 +2.3 29.0 3rd 9.7 -0.6 4.6 8th 0 65.8 lowest 0%
Esperance 23.0 -0.2 31.0 6th 13.1 -0.2 9.5 10th 8.6 44.7 v low 19%
Esperance Aero 24.0 +0.5 30.9 6th 11.5 -1.2 6.0 8th 10.4 39.6 low 26%
Hopetoun North 22.6 -0.6 30.8 11th 12.4 -0.1 7.0 10th 10.2 37.1 low 27%
Jarrahwood 24.7 +0.9 29.7 2nd 7.2 -1.5 0.5 8th 1.8 48.3 v low 4%
Mandurah 24.8 +0.7 29.3 2nd 14.9 -0.9 11.3 8th 0 40.2 v low 0%
Manjimup 21.9 +0.8 28.6 2nd 10.4 -0.4 5.0 8th 5.0 59.5 v low 8%
North Walpole 20.8 -0.7 28.6 2nd 12.0 -0.8 9.1 8th 28.0 87.0 v low 32%
Rocky Gully 21.0 -1.0 28.3 11th 9.8 -1.2 4.6 8th 11.8 52.7 low 22%
Shannon 20.7 -0.8 27.2 2nd 10.2 -0.7 5.1 25th 7.6 66.3 v low 11%
Witchcliffe 22.3 -0.3 28.4 2nd 10.2 -1.0 5.7 25th 7.2 63.9 v low 11%
North Central (district 10)
Bencubbin 27.0 +1.2 31.4 11th 12.5 -0.3 7.2 28th 3.8 22.6 low 17%
Cunderdin Airfield 27.2 +0.7 33.0 5th 10.7 -1.5 5.0 26th 1.2 24.7 v low 5%
Merredin 27.3 +1.8 32.0 5th 13.1 +0.3 6.8 30th 4.8 23.0 low 21%
Northam 27.4 +1.3 32.7 5th 11.2 -0.8 5.9 28th 0.1 23.4 v low 0%
York 27.5 +1.2 32.2 5th 9.0 -2.0 3.0 8th 1.1 22.4 lowest 5%
South Central (district 10A)
Beverley 27.3 +1.2 32.2 5th 10.2 -1.1 4.4 8th 0.2 23.4 v low 1%
Brookton 26.2 +1.3 31.5 20th 10.9 -0.3 5.6 30th 2.4 26.0 v low 9%
Corrigin 26.1 +1.9 31.3 5th 10.7 -0.5 5.1 30th
Hyden 26.9 +1.3 32.5 5th 10.8 -0.3 3.4 8th 10.6 23.5 average 45%
Jacup 23.2 +0.3 29.8 11th 9.9 -0.9 3.8 8th 19.8 42.5 low 47%
Katanning 23.2 -0.1 28.9 11th 10.0 -1.1 5.0 8th 22.2 30.4 average 73%
Lake Grace 24.5 +0.3 30.5 5th 11.0 -1.0 3.9 8th 2.8 25.3 low 11%
Narembeen 27.3 +1.5 32.5 5th 11.5 -0.5 5.6 30th 19.1 23.2 average 82%
Narrogin 24.4 +1.4 29.5 5th 10.1 -0.4 3.6 8th 2.0 29.4 v low 7%
Newdegate Research Station 25.2 +1.0 31.0 5th 8.5 -1.8 1.2 8th 1.6 26.6 low 6%
Ongerup 23.1 +0.4 29.1 11th 10.7 -0.5 4.4 8th 16.2 26.1 average 62%
Pingelly     30.8 5th 11.5 -0.3 5.0 8th 3.6 27.1 low 13%
Ravensthorpe 24.0 +0.3 31.0 5th 11.7 -0.1 5.5 8th 9.0 32.8 low 27%
Wagin 24.0 +0.3 28.7 11th 11.1 +0.3 4.6 8th 5.4 28.7 low 19%
Wandering 25.1 +0.6 30.5 5th 7.8 -1.8 1.1 8th 3.2 30.6 v low 10%
Eucla (district 11)
Balladonia 24.3 -0.7 31.4 12th 9.6 -1.3 5.1 27th 4.5 19.7 low 23%
Eucla 23.8 +0.2 30.6 16th 13.6 +0.2 9.4 30th 15.8 26.7 average 59%
Eyre 24.2 0.0 31.6 15th 9.3 -2.5 1.0 27th 16.5 24.8 average 67%
Forrest 25.8 -0.4 32.6 16th 11.0 -1.0 4.9 27th 9.0 17.8 average 51%
Red Rocks Point 22.5 -1.3 27.9 12th 13.7 -0.6 9.0 25th 18.8 25.8 average 73%
South East (district 12)
Bulga Downs 27.7 -0.9 33.4 16th 12.9 -1.4 7.0 30th 11.2 20.8 average 54%
Kalgoorlie-Boulder Airport 25.4 +0.2 31.4 12th 12.2 -0.5 6.7 30th 4.0 20.4 low 20%
Laverton Aero 26.0 -0.7 32.8 16th 13.7 -1.2 8.7 30th 17.6 20.0 average 88%
Leinster Aero 26.8 -0.9 33.4 16th 13.9 -1.5 8.0 30th 16.0 25.4 average 63%
Leonora Aero 26.2 -1.7 32.8 16th 14.0 -1.3 8.1 30th 13.4 17.0 average 79%
Munglinup West 24.6 +0.3 31.7 5th 11.4 -0.8 5.2 8th 41.0 34.1 high 120%
Norseman Aero 25.3 +0.1 31.5 6th 9.8 -1.2 2.5 8th 6.4 24.3 low 26%
Salmon Gums Res.Stn. 24.6 +0.8 31.5 6th 8.6 -1.4 1.9 29th 9.6 26.9 low 36%
Southern Cross Airfield 26.7 +0.5 32.8 6th 11.2 -0.5 3.2 30th 2.6 23.4 low 11%
North East (district 13)
Carnegie 29.0 -1.1 34.2 7th 14.8 -1.4 9.0 30th 47.4 22.9 high 207%
Giles Meteorological Office 28.0 -1.4 35.7 8th 14.1 -2.3 9.2 29th 87.4 18.1 v high 483%
Telfer Aero 32.8 -1.8 37.4 8th 20.0 -0.6 14.7 13th 19.0 19.2 high 99%
Warburton Airfield 28.1 -1.3 33.9 8th 14.3 -1.0 7.2 30th 42.6 18.8 high 227%
Wiluna 28.4 -0.8 35.0 15th 14.7 -0.4 9.5 30th 22.5 28.9 average 78%
Offshore Islands (district 200)
Browse Island 31.0   32.5 22nd 27.8   23.4 30th
Rowley Shoals 29.9   30.9 9th     26.2 30th
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.
From 2017 on, information about Cocos and Christmas Islands can be found in the climate summary for the Remote Islands and Antarctica

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 Monday 1 May 2017. 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.

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.
From 2017 on, information about Cocos and Christmas Islands can be found in the climate summary for the Remote Islands and Antarctica

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

Media
(03) 9669 4057
Enquiries