Victoria in January 2011: Wettest on record

  • Wettest January on record
  • Daytimes cooler than normal in the west
  • Night-times warmer than normal in the east

Rainfall

Victoria received almost three times its usual rainfall, making January 2011 the wettest January on record (the area average rainfall was 118.58 mm and the long-term average is 39.72 mm). The deluge over parts of Victoria delivered many stations their highest total January rainfall on record as well as their highest January daily rainfall on record. In the west and north of the state, rainfall was very much above average to highest on record. The wettest station for the month was Grampians (Mount William) with 289.6 mm. The wettest single day was the 12th when Jeparit recorded 161.2 mm. More details about the flooding caused by the rainfall are available in the Bureau of Meteorology's Special Climate Statement No. 26. Parts of the North East and Central districts also observed record rainfall. In the east of the state, rainfall in the West and East Gippsland districts was average to below average. Many stations that did not break outright records still had their highest total January rainfall for at least 20 years. There is a map of rainfall deciles below.

Maximum temperature

Average maximum temperatures were within 1 C of normal over most of the state. Averaged over all of Victoria, the monthly maximum temperature was only 0.07 C cooler than usual. In parts of the west daytime temperatures were up to 2 C cooler than usual. Most stations recorded their hottest day for the month on either the 30th or 31st, the hottest of all was Hopetoun Airport with 42.2 C on the 31st. Yarrawonga had the warmest days on average at 32.5 C and Mount Hotham had the coolest with 16.7 C. Mount Baw Baw recorded the coldest day of the month on the 17th with 6.1 C. No stations broke maximum temperature records this month. There is a map of maximum temperature anomalies below.

Minimum temperature

Average minimum temperatures were close to normal in the west but warmer than usual in the east. Averaged over all of Victoria, the monthly minimum temperature was 1.96 C warmer than usual, making January 2011 the 7th warmest January nights on record. The strongest anomalies, up to 2.5 C warmer than usual, were located in Gippsland. A couple of stations had their highest January mean daily minimum temperature on record whilst another recorded its highest January mean daily minimum temperature for at least 20 years. Mount Baw Baw recorded the coldest night on the 3rd with 0.8 C; it also recorded the coolest nights on average with 8.9 C. The warmest single night was the 31st when Walpeup Research recorded 26.5 C. The warmest nights on average were 18.4 C at Hume Reservoir. There is a map of minimum temperature anomalies below.

Further information

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Extremes in January 2011
Hottest day 42.2 C at Hopetoun Airport on the 31st
Warmest days on average 32.5 C at Yarrawonga
Coolest days on average 16.7 C at Mount Hotham
Coldest day 6.1 C at Mount Baw Baw on the 17th
Coldest night 0.8 C at Mount Baw Baw on the 3rd
Coolest nights on average 8.9 C at Mount Baw Baw
Warmest nights on average 18.4 C at Hume Reservoir
Warmest night 26.5 C at Walpeup Research on the 31st
Wettest overall 289.6 mm at Grampians (Mount William)
Wettest day 161.2 mm at Jeparit on the 12th
Highest wind gust 135 km/h at Mount Hotham on the 14th

Maps

Anomaly in mean maximum temperature

Map of Anomaly in mean maximum temperature

Anomaly in mean minimum temperature

Map of Anomaly in mean minimum temperature

Rainfall deciles

Map of Rainfall deciles


Record highest January daily rainfall
Highest daily rainfall
in January 2011 (mm)
Previous wettest
for January
Years of
record
Horsham Polkemmet Rd 98.0 on the 12th 75.4 on the 7th in 1886 133
Maryborough 90.4 on the 14th 83.8 on the 2nd in 1961 133
Dimboola 104.2 on the 12th 95.0 on the 14th in 1974 129
Wedderburn (Post Office) 84.0 on the 14th 62.0 on the 15th in 1974 127
Lancefield 92.0 on the 14th 71.1 on the 2nd in 1970 124
Narraport 70.0 on the 14th 53.0 on the 27th in 1993 123
Nelson 113.2 on the 14th 77.4 on the 24th in 1991 122
Beaufort 96.8 on the 14th 85.6 on the 21st in 1904 120
Longerenong 97.0 on the 12th 72.9 on the 25th in 1863 119
Birchip (Woodlands) 90.2 on the 14th 68.1 on the 11th in 1962 118
Trentham (Post Office) 110.8 on the 14th 101.6 on the 1st in 1921 118
Natte Yallock 81.8 on the 14th 68.0 on the 16th in 1984 112
Jeparit 161.2 on the 12th 119.0 on the 14th in 1974 111
Birregurra (Post Office) 52.0 on the 14th 48.0 on the 22nd in 1997 108
Beeac (Post Office) 66.2 on the 14th 52.6 on the 21st in 1904 107
Berriwillock 63.8 on the 14th 54.0 on the 17th in 1974 107
Rupanyup (Post Office) 90.0 on the 14th 71.0 on the 27th in 1993 106
Ballarat Aerodrome 95.0 on the 14th 83.1 on the 29th in 1963 103
Ultima (Post Office) 64.4 on the 14th 61.4 on the 22nd in 1979 101
Redesdale 78.6 on the 14th 76.0 on the 1st in 1988 99
Ouyen (Post Office) 50.0 on the 14th 49.5 on the 3rd in 1921 98
Annuello 76.6 on the 14th 60.0 on the 1st in 1988 82
Rainbow Post Office 131.0 on the 12th 56.4 on the 19th in 1946 74
Red Cliffs (Post Office) 83.4 on the 12th 57.9 on the 26th in 1959 73
Mildura Airport 61.6 on the 12th 37.6 on the 17th in 1962 65
Lalbert 57.0 on the 14th 55.8 on the 17th in 1974 64
Charlton (Donald St) 64.0 on the 14th 53.3 on the 18th in 1972 51
Eppalock Reservoir 68.4 on the 14th 48.8 on the 2nd in 1970 46
Glenthompson 68.0 on the 14th 50.6 on the 14th in 1974 46
Kyneton 109.0 on the 13th 78.5 on the 13th in 1973 42
Warracknabeal Museum 77.4 on the 10th 77.0 on the 14th in 1974 42
Avalon Airport 36.6 on the 14th 35.0 on the 16th in 1984 29
Portland (Cashmore Airport) 72.0 on the 14th 42.2 on the 24th in 1991 29
Avoca (Homebush) 67.0 on the 12th 58.2 on the 1st in 1988 25
Bendigo Airport 64.2 on the 14th 43.2 on the 27th in 1993 20



Record highest total January rainfall
Total rainfall
for January 2011 (mm)
Previous wettest
for January
Years of
record
Average for
January
Daylesford 237.5 162.7 in 1904 144 46.0
Horsham Polkemmet Rd 145.9 116.6 in 1941 138 23.9
Clunes 217.2 139.5 in 1928 133 32.9
Dimboola 155.0 125.2 in 1974 133 22.3
Maryborough 240.7 132.5 in 1928 133 31.4
Blackwood 211.0 197.1 in 1970 132 50.6
Kerang 154.2 144.2 in 1928 131 23.8
Dunolly 266.6 123.0 in 1928 130 31.1
St Arnaud 225.8 146.9 in 1897 130 28.8
Wedderburn (Post Office) 168.0 166.8 in 1974 128 27.4
Yea 137.8 130.2 in 1904 126 41.0
Longerenong 159.6 129.8 in 1863 125 25.0
Narraport 186.4 79.2 in 1984 125 20.8
St Arnaud (Coonooer Bridge) 174.2 128.4 in 1974 124 27.5
Canary Island 270.7 174.3 in 1928 123 24.5
Inglewood (Post Office) 231.2 174.6 in 1974 123 30.2
Lancefield 220.0 143.6 in 1904 123 41.8
Nelson 196.4 107.3 in 1963 123 30.4
Birchip (Woodlands) 180.6 105.3 in 1962 118 21.5
Trentham (Post Office) 237.0 212.1 in 1904 118 54.4
Bannockburn 108.2 104.2 in 1981 114 31.4
Boort 202.8 99.6 in 1974 113 24.3
Dunkeld 171.8 136.3 in 1963 113 37.0
Jeparit 202.2 142.9 in 1974 113 21.7
Culgoa 103.4 84.0 in 1979 112 21.9
Natte Yallock 215.8 114.0 in 1984 112 27.0
Beulah 160.4 127.8 in 1974 110 22.4
Birregurra (Post Office) 155.6 131.8 in 1991 108 33.3
Avenel (Post Office) 156.2 152.5 in 1904 107 39.0
Berriwillock 155.2 113.3 in 1974 107 20.7
Rupanyup (Post Office) 200.6 93.6 in 1993 106 23.9
Sea Lake (Post Office) 157.0 101.8 in 1974 106 22.2
Ballarat Aerodrome 206.0 188.6 in 1963 103 39.8
Woomelang 129.6 109.8 in 1974 103 21.8
Ultima (Post Office) 172.8 73.5 in 1998 102 19.7
Redesdale 176.2 139.1 in 1928 99 33.8
Ouyen (Post Office) 130.6 111.1 in 1941 98 21.4
Annuello 261.4 95.9 in 1979 83 25.0
Patchewollock 134.3 97.0 in 1979 80 22.2
Rainbow Post Office 181.8 82.7 in 1941 74 22.5
Red Cliffs (Post Office) 145.6 100.9 in 1941 73 23.0
Korong Vale (Burnbank) 205.2 117.6 in 1974 70 27.7
Lalbert 150.0 124.1 in 1962 65 25.1
Mildura Airport 127.0 92.2 in 1984 65 22.2
Cairn Curran Reservoir 189.6 140.4 in 1973 63 34.8
Rokewood (Wurrook South) 142.5 114.9 in 1970 56 35.3
Mangalore Airport 172.0 116.2 in 1984 54 40.1
Charlton (Donald St) 178.6 128.4 in 1974 52 32.8
Eppalock Reservoir 162.8 103.2 in 1974 46 38.7
Glenthompson 134.4 94.4 in 1993 46 35.6
Donald 194.8 112.8 in 1993 45 31.2
Castlemaine Prison 201.0 127.8 in 1973 44 41.3
Ararat Prison 178.1 136.6 in 1979 42 41.2
Kyneton 284.2 131.4 in 1973 42 51.7
Warracknabeal Museum 165.8 128.2 in 1974 42 27.5
Avalon Airport 124.4 86.2 in 1980 30 31.9
Portland (Cashmore Airport) 149.6 96.8 in 1991 29 37.7
Avoca (Homebush) 213.0 122.2 in 1993 25 42.6
Phillip Island Penguin Reserve 73.8 60.6 in 1984 25 32.3
Grovedale (Geelong Airport) 130.4 115.6 in 2005 24 37.3
Cerberus 93.8 82.4 in 2000 21 39.1
Bendigo Airport 177.8 77.6 in 1993 20 37.0

Highest total January rainfall for at least 20 years
Total rainfall
for January 2011 (mm)
Most recent January
at least this wet
Years since
wetter
Average for
January
Heathcote 147.2 152.6 in 1928 83 34.9
Kinglake West (Wallaby Creek) 186.4 199.4 in 1934 77 68.6
Ballan 151.6 160.4 in 1941 70 43.6
Drung Drung 123.0 137.4 in 1941 70 25.2
Natimuk 150.6 164.3 in 1941 69 24.4
Warburton (O'Shannassy Reservoir (Quarte 125.2 170.5 in 1963 48 69.5
Wickliffe 119.4 154.5 in 1963 48 30.8
Balmoral (Post Office) 127.0 143.7 in 1963 47 28.0
Beaufort 231.2 233.7 in 1963 47 40.3
Willaura (Main Street) 125.6 198.7 in 1963 47 31.4
Skipton Post Office 153.0 205.6 in 1963 46 36.7
Durdidwarrah 118.4 131.7 in 1971 40 42.9
Echuca Aerodrome 121.8 224.9 in 1974 37 28.0
Raywood 165.2 196.4 in 1974 37 27.4
Yanac North 85.8 181.2 in 1974 37 21.2
Meredith 100.2 132.8 in 1971 36 42.3
Rushworth 137.0 142.0 in 1974 36 36.1
Goroke (Post Office) 94.8 96.8 in 1974 33 23.4
Walpeup Research 116.8 128.0 in 1979 32 22.5
Chiltern (Post Office) 106.2 154.2 in 1984 27 42.2
Kyabram DPI 113.4 114.9 in 1984 27 33.6
Lake Eildon 117.6 145.8 in 1984 27 47.0
Rochester 112.2 117.6 in 1984 27 30.7
Stanhope 112.8 120.3 in 1984 27 32.9
Werrimull 82.7 98.0 in 1979 26 20.2
Nagambie (Goulburn Weir) 133.4 172.1 in 1984 25 37.0
Toorourrong Reservoir (Toorourrong) 106.6 107.8 in 1988 23 55.0
Yan Yean 83.8 103.8 in 1988 23 45.1
Beeac (Post Office) 142.9 145.0 in 1991 20 33.3
Derrinallum (Post Office) 151.4 161.8 in 1991 20 41.3
Lismore (Post Office) 145.8 154.6 in 1991 20 38.8
Melbourne Airport 98.6 101.6 in 1991 20 42.6
Nullawarre 100.6 180.4 in 1991 20 41.9
Seymour Shire Depot 77.0 104.0 in 1991 20 34.6
Terang 122.8 208.8 in 1991 20 39.6



Record highest January mean daily minimum temperature
Mean daily minimum
temperature
for January 2011 (C)
Previous warmest
for January
Years of
record
Average for
January
East Sale Airport 15.2 15.1 in 2006 65 12.8
Noojee (Slivar) 13.7 13.5 in 1999 26 11.2

Highest January mean daily minimum temperature for at least 20 years
Mean daily minimum
temperature
for January 2011 (C)
Most recent January
at least this warm
Years since
warmer
Average for
January
Orbost (Comparison) 15.7 15.8 in 1981 26 13.2



Summary statistics for January 2011
Maximum temperatures
for January
(C)
Minimum temperatures
for January
(C)
Rainfall
for January
(millimetres)
Mean for
January
2011
Diff
from
average
Highest for
January
2011
Mean for
January
2011
Diff
from
average
Lowest for
January
2011
Total for
January
2011
Average
for
January
Rank of
January
2011
Fraction of
January
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 31.3 -0.8 38.2 31st 18.0 +1.7 12.6 28th 72.4 33.5 high 216%
Hume Reservoir 30.8 +0.1 35.0 1st 18.4 +2.0 12.7 28th 89.4 45.4 high 197%
North Mallee (district 76)
Mildura Airport 32.0 -0.2 39.9 31st 17.5 +0.9 11.5 4th 127.0 22.2 highest 572%
Ouyen (Post Office) 32.0 -0.3 41.3 31st 17.1 +1.7 10.6 4th 130.6 21.4 highest 610%
Walpeup Research 31.2 -0.6 42.1 31st 16.6 +1.4 10.2 18th 116.8 22.5 v high 519%
South Mallee (district 77)
Hopetoun Airport 30.8   42.2 31st 15.7   8.7 4th 151.6
Swan Hill Aerodrome 31.1 -1.9 40.0 31st 16.6 +0.7 7.9 4th 135.2 30.9 v high 438%
North Wimmera (district 78)
Nhill Aerodrome 29.7   41.0 31st 14.3   5.9 4th 106.6
Warracknabeal Museum 29.8 -1.0 41.6 31st 15.0 +1.0 9.0 4th 165.8 27.5 highest 603%
South Wimmera (district 79)
Edenhope Airport 27.4   39.8 30th 13.5   6.9 4th 110.2
Grampians (Mount William) 19.4   30.2 30th 10.0   2.2 3rd 289.6
Horsham Aerodrome 29.1 -1.9 39.8 31st 13.2 +0.8 5.7 4th 159.2 32.1 v high 496%
Horsham Polkemmet Rd 29.0 -0.8 39.7 31st 13.7 +0.6 5.5 4th 145.9 23.9 highest 610%
Longerenong 29.5 -0.4 41.6 31st 13.9 +1.0 7.7 2nd 159.6 25.0 highest 638%
Pyrenees (Ben Nevis) 22.1   32.0 31st 11.7   4.3 3rd 170.2
Stawell Aerodrome 27.4 -1.9 39.6 31st 14.0 +0.7 8.1 4th 172.4 40.5 v high 426%
Lower North (district 80)
Charlton 30.4   41.9 31st 15.8   6.9 4th 168.6
Echuca Aerodrome 30.9 0.0 40.8 31st 16.3 +1.2 7.4 3rd 121.8 28.0 v high 435%
Kerang 30.9 -0.6 40.8 31st 17.3 +2.2 9.4 4th 154.2 23.8 highest 648%
Kyabram DPI 30.2 +0.2 40.7 31st 15.7 +1.4 9.1 4th 113.4 33.6 v high 338%
Upper North (district 81)
Bendigo Airport 28.2 -1.4 37.1 30th 15.0 +1.1 7.6 4th 177.8 37.0 highest 481%
Shepparton Airport 30.0 -2.0 39.4 31st 16.3 +1.3 9.0 4th 100.8 25.6 v high 394%
Tatura Inst Sustainable Ag 29.0 -0.6 36.1 30th 15.9 +1.8 9.1 4th 101.6 33.4 v high 304%
Yarrawonga 32.5 0.0 41.9 31st 16.6 +0.9 9.4 3rd 75.4 30.6 high 246%
Lower Northeast (district 82)
Beechworth Woolshed 30.0 -0.8 37.9 31st     6.9 29th 133.8 48.6 v high 275%
Benalla Airport 30.9   40.1 31st 16.4   10.7 27th 78.9
Corryong Airport 31.4   37.1 26th 15.2   10.2 3rd 33.0
Dartmouth Reservoir 29.7 +0.5 36.2 31st 16.1 +2.5 12.4 29th 87.6 61.6 high 142%
Hunters Hill 26.3 +0.6 32.9 31st 15.6 +1.5 11.0 4th 97.0 60.1 high 161%
Rutherglen Research 31.4 +0.1 39.9 31st 16.0 +2.3 8.3 3rd 71.8 36.3 high 198%
Strathbogie 26.4 -0.8 35.3 31st 13.4 +1.9 7.2 4th 128.8 47.4 v high 272%
Wangaratta Aero 31.2 -0.7 40.5 31st 15.8 +1.7 10.4 4th 70.0 40.9 high 171%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 22.4 -0.6 29.1 31st 10.1 +1.5 1.8 4th 60.6 50.1 average 121%
Edi Upper 29.2 -0.8 33.4 30th 15.3 +1.4 9.4 4th 156.7 61.2 high 256%
Falls Creek 18.2 +0.6 23.9 31st 10.1 +1.6 2.2 4th 124.8 107.0 average 117%
Mount Buller 17.2 +0.1 23.5 31st 9.6 +0.9 2.3 18th 182.6 72.5 v high 252%
Mount Hotham 16.7 +0.5 22.5 31st 9.3 +1.5 2.3 4th 121.8 96.7 high 126%
Omeo 26.1   35.3 31st 12.9   5.2 29th 50.4
East Gippsland (district 84)
Combienbar AWS 25.9 +0.6 38.4 31st 14.9 +1.5 8.3 4th 36.2 72.3 low 50%
Gabo Island Lighthouse 22.2 +1.0 26.5 30th 17.3 +1.6 12.2 29th 24.8 70.3 low 35%
Gelantipy 24.6 +0.8 36.0 31st 13.1 +1.5 7.6 29th 33.0 62.3 low 53%
Lakes Entrance (Eastern Beach Road) 24.4   34.3 31st 16.2   7.0 4th 35.0
Mallacoota 24.0 -0.1 30.1 21st 16.8 +1.3 8.7 4th 38.4 63.0 average 61%
Mount Nowa Nowa 25.0 +0.3 37.3 30th 15.5 +1.4 9.6 4th 37.6 58.2 low 65%
Orbost 26.3 -0.2 37.3 30th 16.4 +1.9 7.8 4th 34.4 39.5 average 87%
Orbost (Comparison) 26.7 +1.2 37.4 30th 15.7 +2.5 6.4 4th 30.0 66.5 low 45%
Point Hicks (Lighthouse) 24.6 +0.9 32.8 31st 17.0 +1.3 11.0 4th 35.4 61.8 low 57%
West Gippsland (district 85)
Bairnsdale Airport 26.4 +0.6 40.9 30th 14.8 +2.1 5.0 4th 31.2 49.3 low 63%
East Sale Airport 26.0 +0.6 38.6 30th 15.2 +2.4 6.8 4th 43.8 45.4 average 96%
Morwell (Latrobe Valley Airport) 26.8 +0.5 38.8 30th 14.6 +2.1 5.9 4th 44.0 49.1 average 90%
Mount Baw Baw 16.8 -0.9 25.2 31st 8.9 +0.2 0.8 3rd 56.4 93.0 low 61%
Mount Moornapa 25.3 0.0 37.3 30th 14.2 +1.0 8.0 4th 71.6 62.4 average 115%
Noojee (Slivar) 25.4 +0.3 36.7 31st 13.7 +2.5 5.5 4th 53.4 67.2 average 79%
Pound Creek 24.7   37.1 30th 13.7   3.4 4th 39.6
Wilsons Promontory Lighthouse 22.0 +1.8 34.8 31st 15.6 +1.6 12.7 3rd 52.0 51.1 average 102%
Yarram Airport 25.3   40.0 30th 13.4   3.6 4th 44.4
East Central (district 86)
Bundoora (Latrobe University) 26.0 -0.5 37.4 30th 15.7 +1.7 9.4 29th 86.2 48.3 v high 178%
Cerberus 24.3 +0.1 37.0 30th 14.9 +1.2 9.1 4th 93.8 39.1 highest 240%
Coldstream 26.9 -0.8 36.8 31st 13.9 +2.3 5.5 4th 75.2 46.3 v high 162%
Coldstream Comparison 26.8   36.8 31st 13.8   5.4 4th 75.2
Cranbourne Botanic Gardens 25.1 -0.1 36.6 30th 14.6 +1.2 8.8 4th 90.5 55.3 high 164%
Essendon Airport 26.1 -0.2 37.0 30th 15.5 +2.2 9.5 29th 76.2 43.7 high 174%
Ferny Creek (Dunns Hill) 22.4 +0.1 33.4 31st 12.5 +0.5 7.0 4th 98.0 67.9 high 144%
Frankston AWS 24.5 -0.2 31.9 7th 16.3 +0.9 11.3 4th
Melbourne Airport 26.2 -0.1 37.2 30th 15.0 +1.4 8.5 4th 98.6 42.6 v high 231%
Melbourne Regional Office 26.5 +0.6 38.1 30th 17.0 +2.7 12.7 4th 89.6 47.7 high 188%
Moorabbin Airport 25.4 -0.2 37.5 30th 15.5 +1.4 8.4 4th 100.8 45.5 v high 222%
Rhyll 24.0 +0.5 35.1 30th 16.4 +1.2 12.9 2nd 74.8 38.0 high 197%
Scoresby Research Institute 26.1 0.0 36.1 31st 14.9 +1.8 7.6 4th 102.4 53.5 v high 191%
Viewbank (ARPANSA) 26.5 -1.2 37.2 31st 15.6 +1.4 9.1 4th 108.8 43.5 v high 250%
Wallan (Kilmore Gap) 23.3 -1.3 34.7 31st 12.5 +0.4 6.7 4th 120.4 52.0 high 232%
Wonthaggi 24.8 +1.0 36.9 30th 14.6 +1.7 6.5 4th 65.0 48.4 high 134%
West Central (district 87)
Avalon Airport 25.8 -0.3 38.7 30th 14.8 +0.9 9.8 29th 124.4 31.9 highest 390%
Grovedale (Geelong Airport) 25.3 +0.9 39.0 30th 14.0 +1.2 8.7 2nd 130.4 37.3 highest 350%
Laverton RAAF 25.3 -0.3 38.4 30th 15.6 +1.9 9.8 29th 111.4 40.0 v high 279%
Sheoaks 25.6 +0.1 36.4 30th 13.2 +1.1 5.2 3rd 122.4 37.7 v high 325%
North Central (district 88)
Castlemaine Prison 27.1 -1.0 38.9 31st 13.4 +0.5 8.3 19th 201.0 41.3 highest 487%
Eildon Fire Tower 25.6 -1.7 34.7 31st 14.2 +0.8 6.7 3rd 125.2 38.9 v high 322%
Lake Eildon 29.3 +0.6 38.0 31st 15.0 +2.4 7.5 4th 117.6 47.0 v high 250%
Mangalore Airport 28.8 -0.9 38.7 31st 15.6 +1.5 8.8 4th 172.0 40.1 highest 429%
Maryborough 27.9 -0.8 39.1 31st 14.1 +1.3 7.6 4th 240.7 31.4 highest 767%
Redesdale 28.2 -0.8 39.5 31st 13.2 +0.2 6.4 4th 176.2 33.8 highest 521%
Western Plains (district 89)
Ararat Prison 26.9 +0.2 38.7 31st 13.6 +2.6 6.2 4th 178.1 41.2 highest 432%
Ballarat Aerodrome 24.3 -0.8 33.6 30th 12.7 +1.9 6.7 3rd 206.0 39.8 highest 518%
Westmere 26.5   38.0 30th 12.7   4.7 4th 154.6
West Coast (district 90)
Aireys Inlet 23.2 +0.7 38.1 30th 14.8 +1.0 10.7 2nd 158.0 41.2 v high 383%
Cape Nelson Lighthouse 21.6 +0.6 35.4 30th 14.5 0.0 10.4 25th 145.2 37.6 v high 386%
Cape Otway Lighthouse 21.2 -0.2 35.7 7th 14.6 +1.3 10.3 27th 121.6 44.3 v high 274%
Casterton 25.2   38.0 30th 12.2   5.0 4th 141.6
Casterton Showgrounds 26.2 -0.9 39.4 30th 12.7 +0.9 4.8 5th 137.6 31.2 v high 441%
Colac (Mount Gellibrand) 24.1 -1.4 35.9 30th 12.8 +0.5 8.0 3rd 148.6 39.4 v high 377%
Dartmoor 25.0   39.8 30th 12.6   4.1 4th 131.2
Hamilton Airport 25.0 -1.3 37.4 30th 12.0 +1.1 4.0 4th 124.6 35.6 v high 350%
Mortlake Racecourse 24.4 -1.2 36.6 30th 12.0 +1.3 3.1 4th 134.4 36.6 v high 367%
Port Fairy AWS 22.6 +0.2 38.3 7th 14.7 +0.9 10.6 27th 108.4 34.1 high 318%
Portland (Cashmore Airport) 21.6 -0.2 35.4 7th 12.8 +0.7 8.1 2nd 149.6 37.7 highest 397%
Warrnambool Airport NDB 23.5 -0.7 36.6 30th 12.3 +0.8 5.1 6th 107.8 38.0 high 284%
Weeaproinah 20.2 +0.5 32.5 30th 11.3 +0.5 7.3 3rd 164.4 87.3 v high 188%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Victoria 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, usually published in the fourth week of the month.

This statement has been prepared based on information available at 10 am on Tuesday 1 February 2011. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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.

Further information

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