Western Australia in 2017: a very wet year with above average temperatures

Rainfall in 2017 was very much above average for Western Australia and the ninth-wettest year on record. Temperatures were above average overall, with the State mean maximum temperature the eighth-warmest on record.

Wet for much of the north and east; dry along the west coast

  • WA annual rainfall was 42% above average and the ninth-highest since comparable records commenced in 1900
  • Above average rainfall was recorded in northern and eastern parts of WA, with Lake Argyle Resort in the east Kimberley recording its wettest year
  • Below average rainfall was confined to areas near the west coast; annual rainfall was less than 100 mm at Weedarrah in the Gascoyne and Exmouth Town in the west Pilbara, their driest years for more than 20 years
  • Above average rainfall was reported in central and southeastern parts of the South West Land Division (SWLD) with several sites observing their highest annual rainfall on record or highest for at least 30 years
  • Two tropical cyclones, Blanche and 22U, as well as six tropical lows impacted Western Australia between January and April 2017, whilst tropical cyclone Hilda also brought significant rainfall to the west Kimberley at the year's end
  • Cygnet Bay recorded the State's highest daily rainfall in 2017 with 291.5 mm on 27 December during the passage of tropical cyclone Hilda
  • Two tropical lows and associated cloudbands produced notable heavy rainfall in the Pilbara and the SWLD at the end of January and early February with many sites reporting daily rainfall records, resulting in significant flooding in parts of the SWLD
  • Thunderstorms in central and southwest WA produced heavy rainfall between 22 and 24 April with Mettler (South Coastal) reporting a record high 155.0 mm in the 24 hours to 9am on 23 April
  • Seasonal thunderstorm activity produced localised heavy rainfall in the Kimberley in mid-January; Christmas Creek Homestead recorded a 53 year daily rainfall record on the 17th
  • A cut-off low pressure system produced moderate to heavy rainfall in southwest WA on 22 and 23 June; Wandering registered its highest June daily rainfall with 130.8 mm on the 23rd, and the second-highest daily fall for any month when combining the current and old site records

Above average daytime and overnight temperatures

  • WA's annual mean maximum temperature was 0.87 °C above average, the eighth-warmest year since comparable records commenced in 1910
  • Most of WA recorded above average mean maximum temperatures in 2017, with only parts of the east Pilbara coast recording below average day-time temperatures
  • The annual mean minimum temperature for WA was 0.32 °C above average
  • Parts of the east Kimberley and eastern Northern Interior, and small parts of the southern Goldfields and Eucla seeing below average overnight temperatures
  • Onslow Airport recorded the State's highest temperature in 2017 with 46.7 °C on 24 December
  • The SWLD experienced cold conditions on 1 July, and 9 August, with a few sites recording maximum temperatures below 10 °C and setting records for low maximum temperatures
  • Rocky Gully recorded a maximum temperature 7.3 °C on 9 August, which was the lowest maximum in WA for 27 years since 23 July 1990 when 7.0 °C was recorded at Mount Barker
  • Days of clear skies and light winds over much of WA in early July following bursts of cool southerly air led to a few low temperature records in the Goldfields, Southern Interior, and Pilbara

Further information

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Extremes in 2017
Hottest day 46.7 °C at Onslow Airport on 24 Dec
Warmest days on average 36.2 °C at Fitzroy Crossing Aero
Coolest days on average 20.0 °C at North Walpole
20.0 °C at Shannon
Coldest day 7.3 °C at Rocky Gully on 9 Aug
Coldest night -5.1 °C at Eyre on 14 Sep
Coolest nights on average 8.3 °C at Jarrahwood
Warmest nights on average 26.1 °C at Troughton Island
23.4 °C at Truscott
Warmest night 31.6 °C at Mount Magnet Aero on 28 Jan
Warmest on average overall 29.0 °C at Wyndham Aero
Coolest on average overall 14.9 °C at Shannon
Wettest overall 1568.1 mm at Doongan
Driest overall 93.4 mm at Weedarrah
Wettest day 291.5 mm at Cygnet Bay on 27 Dec
Strongest wind gust 139 km/h at Albany Airport on 21 Sep

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


Monthly maps
Rainfall rankMaximum temperature rankMinimum temperature rank
January Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
February Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
March Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
April Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
May Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
June Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
July Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
August Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
September Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
October Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
November Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
December Map of Rainfall deciles Map of Decile rank of mean maximum 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 daily rainfall
New record
(mm)
Old
record
Years of
record
Bannister 115.0 on 10 Feb 113.0 on 17 Feb 1955 120
Brookton 96.6 on 10 Feb 90.9 on 16 Mar 1963 111
Yorkrakine 140.0 on 29 Jan 102.1 on 14 Feb 1939 103
Mount Madden 104.8 on 11 Feb 91.4 on 17 Feb 1970 87
Cygnet Bay 291.5 on 27 Dec 269.4 on 10 Feb 2014 55
Christmas Creek Homestead 186.0 on 17 Jan 182.9 on 13 Jan 1962 53
Bakers Hill 75.3 on 10 Feb 68.6 on 11 May 1987 52
Chesalon 87.4 on 11 Feb 83.8 on 15 Jan 2000 52
Mettler 155.0 on 23 Apr 119.0 on 22 Jan 1982 52
Dampier Salt 208.0 on 9 Feb 195.0 on 10 Jan 2006 49
Dwarda Downs 127.0 on 10 Feb 89.0 on 13 Dec 2011 36
Koorarawalyee 74.6 on 8 Feb 52.3 on 8 May 1921 32
Cape Arid National Park 81.0 on 9 Feb 77.8 on 28 Feb 2000 30
Glenrose 107.0 on 10 Feb 68.1 on 13 Dec 2011 30
Rottnest Island 93.8 on 10 Feb 66.8 on 21 Jul 2011 30
Huntly 128.0 on 10 Feb 101.5 on 16 Apr 2007 28
Perth Metro 114.4 on 10 Feb 104.0 on 22 Jan 2000 25
Swanbourne 97.4 on 10 Feb 82.0 on 4 Aug 1994 25
Cloon 108.6 on 10 Feb 79.6 on 19 May 2005 24
York 91.0 on 10 Feb 73.6 on 13 Jan 2006 22
Dalwallinu 63.4 on 30 Jan 59.4 on 31 Jul 2015 21
Wandering 130.8 on 23 Jun 88.4 on 13 Dec 2011 20



Record highest annual total rainfall
New record
(mm)
Old
record
Years of
record
Annual
average
Telenning Hill 628.2 610.2 in 1963 91 331.7
Denbarker 1245.0 1046.0 in 2005 37 782.5
Lake Argyle Resort 1222.8 1144.4 in 1969 36 754.6
Nalyerlup 675.8 641.5 in 2016 32 457.2
Dwarda Downs 683.4 666.0 in 2011 28 523.8

Highest annual total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Annual
average
Yorkrakine 516.5 545.3 in 1917* 316.8
Quairading 559.9 562.9 in 1932* 368.9
Ygnattering 547.0 577.0 in 1963* 331.6
Yealering 454.2 455.1 in 1976* 369.3
Yakabindie 457.0 550.2 in 1975* 226.4
Colorado 438.8 498.4 in 1983* 368.8
Muresk Institute 545.7 598.6 in 1964* 456.0

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




Record lowest annual total rainfall
New record
(mm)
Old
record
Years of
record
Annual
average
Weedarrah 93.4 107.7 in 2002 25 218.4

Lowest annual total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Annual
average
Exmouth Town 99.4 83.6 in 1987* 289.4

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




Record lowest daily maximum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Newdegate Research Station 9.2 on 1 Jul 9.5 on 11 Jul 2011 22 23.4
Rocky Gully 7.3 on 9 Aug 7.9 on 27 Aug 2004 22 20.9
Lake Grace 9.0 on 1 Jul 9.5 on 31 May 2004 21 23.6
Wandering 9.8 on 9 Aug 9.9 on 11 Jul 2011 20 23.7



Record lowest temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Giles Meteorological Office -2.5 on 8 Jul -1.6 on 23 Jun 1981 62 15.9
Learmonth Airport 3.5 on 10 Jul 3.8 on 19 Jul 1986 43 17.7
Laverton Aero -3.3 on 5 Jul -2.6 on 28 Jul 1998 27 14.0



Summary statistics for 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2017
Diff
from
average
Highest
for
2017
Mean
for
2017
Diff
from
average
Lowest
for
2017
Total
for
2017
Average
annual
total
Rank
of
2017
Fraction
of annual
average
North Kimberley (district 01)
Kalumburu 34.8 +0.5 40.6 16 Oct 20.8 +0.4 8.3 14 Jun 1498.6 1204.8 high 124%
Troughton Island 31.6 +0.5 35.6 13 Dec 26.1 +0.7 21.4 5 Aug
Truscott 32.9 +0.2 37.9 3 Nov 23.4 +0.3 16.2 9 Jun 1185.0 1117.4 average 106%
Wyndham Aero 36.0 0.0 43.2 18 Oct 22.1 -0.2 9.5 14 Jun 1258.0 857.4 high 147%
East Kimberley (district 02)
Argyle Aerodrome 34.9 +0.1 42.9 12 Dec 22.2 0.0 11.2 11 Jun 736.0 755.0 average 97%
Halls Creek Airport 33.7   43.1 13 Dec 18.5   3.6 4 Aug
Kununurra Aero 35.2 +0.2 43.3 18 Oct 20.9 -0.3 8.7 4 Aug 1271.0 844.0 v high 151%
Warmun 34.7 -0.4 45.1 9 Dec     7.3 5 Aug
West Kimberley (district 03)
Broome Airport 32.9 +0.7 43.4 30 Oct 21.7 +0.4 7.6 5 Aug 778.2 615.4 high 126%
Curtin Aero 35.3 -0.3 44.0 19 Oct 21.3 +0.3 9.7 3 Aug
Derby Aero 35.2 +0.6 44.8 30 Oct 21.3 -0.3 7.4 4 Aug 966.6 694.7 high 139%
Fitzroy Crossing Aero 36.2 +0.1 44.6 20 Oct 19.9 -0.3 5.8 3 Aug 775.0 722.7 high 107%
De Grey (district 04)
Karratha Aero 32.5 +0.1 43.0 5 Jan 20.8 0.0 8.3 11 Jul 449.8 300.4 high 150%
Mandora 34.7 +0.6 45.4 4 Jan 19.7 +0.3 3.7 3 Aug 479.6 376.6 high 127%
Marble Bar 35.4 -0.2 45.5 4 Jan 20.0 -0.4 5.4 11 Jul 541.6 392.3 high 138%
Port Hedland Airport 33.7 +0.4 44.4 5 Jan 20.2 +0.7 5.6 11 Jul 592.4 319.2 v high 186%
Roebourne Aero 34.6 -0.2 45.5 5 Jan 19.4 -0.4 4.1 11 Jul 351.2 293.3 average 120%
Fortescue (district 05)
Barrow Island Airport 29.6 +0.3 39.7 6 Mar     12.2 3 Aug 367.4 298.2 average 123%
Onslow Airport 32.8 +0.8 46.7 24 Dec 19.8 +0.7 7.8 9 Jul 279.4 314.4 average 89%
Thevenard Island 30.3 +0.5 42.2 4 Mar 21.8 0.0 12.4 6 Aug 247.6 243.8 average 102%
Wittenoom 33.5 +0.5 44.5 15 Dec 19.9 +0.1 5.0 10 Jul 451.0 462.3 average 98%
West Gascoyne (district 06)
Carnarvon Airport 28.3 +1.0 42.7 26 Jan 17.2 0.0 3.4 3 Aug 107.7 223.0 low 48%
Denham 26.9 +0.1 42.0 26 Jan 17.8 0.0 9.0 30 Jun 124.6 223.2 low 56%
Shark Bay Airport 29.4 +0.3 44.0 26 Jan 16.2 -0.2 4.8 30 Jun 159.0 207.7 average 77%
East Gascoyne (district 07)
Newman Aero 32.2 +0.2 43.4 23 Dec 16.5 +0.1 -0.5 10 Jul 519.0 332.6 v high 156%
Paraburdoo Aero 33.8 +0.3 45.1 23 Dec 18.3 +0.1 2.0 3 Aug 312.8 324.2 average 96%
Murchison (district 07A)
Meekatharra Airport 30.1 +1.1 43.6 5 Jan 16.3 +0.4 1.5 3 Aug 200.8 238.2 average 84%
Mount Magnet Aero 29.3 +0.7 45.1 5 Jan 15.4 +0.2 0.8 3 Aug
Paynes Find     44.2 27 Jan 13.1 +0.2 -1.4 28 Jun 216.6 289.0 low 75%
North Coast (district 08)
Dalwallinu 26.7 +0.4 43.0 4 Jan 11.8 0.0 1.7 9 Jun 281.8 290.1 average 97%
Geraldton Airport 27.1   44.2 26 Jan 13.5   2.4 3 Aug
Kalbarri 28.2 +0.5 42.5 8 Dec     1.9 30 Jun 196.0 343.6 v low 57%
Mullewa 28.8 +0.9 44.4 4 Jan 14.3 +1.1 1.2 3 Aug 381.4 333.7 high 114%
Central Coast (district 09)
Badgingarra Research Stn 26.3 +0.4 44.5 28 Jan 12.4 +0.5 1.6 3 Aug 439.8 542.4 low 81%
Bickley 22.4 -0.2 41.0 4 Jan 11.4 +0.1 3.4 1 Aug 1174.4 1078.9 average 109%
Gingin Aero 25.7 +0.2 43.6 4 Jan 11.1 +0.1 -0.6 2 Aug
Jandakot Aero 24.8 +0.2 41.7 26 Jan 12.2 +0.8 0.7 2 Aug 830.6 823.7 average 101%
Lancelin 24.1 -0.1 40.5 26 Jan 13.7 +0.1 5.0 26 Jun 729.6 604.9 high 121%
Pearce RAAF 26.0 +0.8 44.5 4 Jan 12.2 0.0 1.5 26 Jun 725.6 654.6 high 111%
Perth Airport 25.3 +0.8 43.3 4 Jan 12.6 +0.4 1.0 2 Aug 729.8 765.6 average 95%
Perth Metro 25.0 +0.3 42.0 26 Jan 13.1 +0.3 1.7 2 Aug 854.0 844.0 average 101%
Rottnest Island 22.2 0.0 39.3 26 Jan 15.7 0.0 8.2 1 Aug 579.6 572.4 average 101%
Swanbourne 23.7 -0.4 40.1 26 Jan 14.3 +0.4 5.1 2 Aug 807.6 730.2 average 111%
South Coast (district 09A)
Albany 19.7 +0.2 35.9 25 Feb     5.2 29 Jun 848.5 928.6 average 91%
Albany Airport 20.6   39.4 26 Jan 10.2   0.3 12 Jun
Bunbury     39.0 4 Jan 10.9 -0.2 -0.3 2 Jul 679.2 726.1 average 94%
Busselton Aero 23.1 0.0 38.3 4 Jan 10.4 +0.1 1.1 9 Jul 653.4 684.2 average 95%
Cape Naturaliste 21.9 +1.2 34.7 26 Jan 12.9 +0.2 6.1 4 Oct 596.8 802.7 v low 74%
Collie East 23.3 +0.1 40.4 4 Jan 8.4 -0.1 -2.2 29 Jun 755.0 722.9 average 104%
Dwellingup 22.8 +0.9 40.7 4 Jan 10.2 +0.6 -0.5 2 Aug 1286.0 1233.0 average 104%
Esperance 21.9 0.0 42.6 5 Jan 12.2 +0.1 3.6 30 Jun
Esperance Aero 22.8 +0.6 43.0 5 Jan 10.9 -0.4 2.9 30 Jun 631.4 571.3 high 111%
Jarrahwood 23.1 +0.5 39.8 4 Jan 8.3 -0.4 -1.5 13 Sep 912.8 934.2 average 98%
Mandurah 23.4 +0.1 37.6 4 Mar 14.8 0.0 5.7 2 Aug 619.8 667.3 average 93%
Manjimup 21.2 +0.8 39.7 4 Jan 9.8 +0.1 2.0 9 Jul 756.2 991.7 low 76%
North Walpole 20.0 -0.3 34.8 25 Feb 11.4 -0.3 4.6 13 Sep
Rocky Gully 20.7 -0.2 40.2 4 Jan 9.3 -0.3 1.5 14 Sep 748.4 715.1 average 105%
Shannon 20.0 -0.4 38.9 4 Jan 9.7 0.0 0.8 13 Sep 938.8 1008.9 average 93%
Witchcliffe 21.2 -0.2 35.9 25 Feb 10.8 +0.1 2.9 14 Sep 1069.8 957.6 average 112%
North Central (district 10)
Bencubbin 25.8 +0.4 42.6 5 Jan 12.2 +0.5 1.5 6 Jul 282.9 315.8 average 90%
Cunderdin Airfield 26.1 +0.1 44.4 28 Jan 10.5 0.0 -1.4 7 Jun 408.8 308.3 high 133%
Merredin 25.9 +0.8 43.5 5 Jan     -1.0 6 Jul 314.9 326.4 average 96%
Northam 25.8 +0.4 45.0 28 Jan 10.6 -0.3 -0.6 30 Jun 536.1 427.9 high 125%
York     43.7 4 Jan 9.4 -0.2 -2.5 29 Jun 551.6 396.1 v high 139%
South Central (district 10A)
Beverley 25.6 +0.2 43.0 4 Jan 10.3 +0.1 -0.6 29 Jun 515.2 418.4 high 123%
Brookton 24.6 +0.3 42.8 4 Jan 10.0 +0.3 -1.0 6 Jul 512.6 451.5 high 114%
Corrigin 24.6 +0.8 42.0 28 Jan 10.1 +0.1 -0.9 14 Sep
Hyden 25.4 +0.3 44.2 5 Jan 10.0 0.0 -0.5 7 Jun 473.3 342.0 v high 138%
Jacup 22.4 +0.4 43.3 5 Jan 9.1 -0.2 0.9 10 Jul 462.4 458.6 average 101%
Katanning 22.4 -0.1 40.3 4 Jan 9.4 -0.2 1.4 5 Sep 488.0 457.2 high 107%
Lake Grace 23.5 -0.1 42.0 5 Jan 10.4 0.0 1.0 6 Jul 400.2 344.5 high 116%
Narrogin 23.1 +0.7 40.7 11 Jan 9.8 +0.4 0.0 3 Jul 614.2 493.5 high 124%
Newdegate Research Station 23.6 +0.2 43.7 5 Jan 8.5 -0.2 -2.1 10 Jul 411.2 372.4 high 110%
Ongerup 22.2 +0.4 41.0 5 Jan 9.7 -0.1 0.0 13 Sep 508.6 387.5 v high 131%
Ravensthorpe 22.7 -0.1 43.0 5 Jan 10.7 +0.2 1.5 29 Jun 565.5 430.7 v high 131%
Wagin 23.2 +0.2 41.1 4 Jan 10.2 +0.4 0.1 13 Sep 526.5 432.9 high 122%
Wandering 23.5 -0.2 42.4 4 Jan 8.8 +0.3 -1.8 9 Jun 833.0 527.7 v high 158%
Eucla (district 11)
Eucla 23.9 +1.2 43.9 17 Dec 12.3 +0.1 1.5 8 Jul 271.8 273.9 average 99%
Eyre 24.5 +1.5 45.2 26 Dec 10.0 -0.7 -5.1 14 Sep 319.8 315.2 average 101%
Forrest 26.6 +0.3 45.0 26 Dec 11.0 0.0 -1.8 3 Jun 160.0 222.1 low 72%
Red Rocks Point 22.9 +0.5 42.4 18 Nov 12.9 -0.3 1.9 11 Aug 249.4 348.5 v low 72%
South East (district 12)
Bulga Downs 28.8 0.0 43.7 22 Dec 13.1 -0.5 -4.0 5 Jul 285.4 236.8 average 121%
Kalgoorlie-Boulder Airport 25.7 +0.4 42.6 22 Dec 12.4 +0.7 -0.6 5 Jul
Laverton Aero 27.7 +0.7 43.3 16 Dec 13.5 -0.5 -3.3 5 Jul 509.8 301.2 v high 169%
Leinster Aero 28.6 +0.4 43.3 16 Dec 14.4 -0.3 -1.1 7 Jul 390.0 266.2 high 147%
Leonora Aero 28.0   44.4 16 Dec 14.0   -2.0 5 Jul 438.0 276.8 high 158%
Munglinup West 23.1 -0.1 44.2 5 Jan 10.2 -0.4 1.7 31 Jul 542.6 473.4 high 115%
Norseman Aero 25.2 +0.1 43.3 22 Dec 9.8 -0.1 -2.1 18 Aug 251.4 299.8 average 84%
Salmon Gums Res.Stn. 23.7 +0.2 41.6 5 Jan 8.8 -0.3 -3.8 18 Aug 485.2 356.7 v high 136%
North East (district 13)
Giles Meteorological Office 30.5 +1.1 42.9 24 Dec 15.9 0.0 -2.5 8 Jul 350.2 292.6 high 120%
Telfer Aero 34.2 +0.1 45.0 21 Nov 19.8 +0.3 5.1 8 Jul 723.2 371.2 v high 195%
Warburton Airfield 30.4 +0.5 43.6 23 Dec 15.3 +0.4 -2.3 7 Jul 333.4 247.6 high 135%
Offshore Islands (district 200)
Browse Island 29.8   33.4 22 Dec     21.9 2 May
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 Annual climate summary, generally published on the second working day of the year, 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 9 January 2018. 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

Media
(03) 9669 4057
Enquiries