New South Wales in December 2009: Wet end to 2009

  • Above average maximum, minimum and mean temperatures.
  • Above average rainfall for NSW and Murray Darling Basin.
  • 11th warmest on record for average mean temperatures.
  • 12th warmest on record for average maximum temperatures.
  • 3rd consecutive December with above average rainfall for NSW and Murray Darling Basin.

Rainfall

Statewide average rainfall for December was 70.6 mm which is above the historical average1 of 50.9 mm. Most of December was dry with small areas recording some localised falls due to thunderstorms. The majority of rainfall recorded across the state fell in the last week of the month. Widespread rainfall across NSW fell late on Christmas Day and conitnued on through till the end of 2009. This was due to an inland low pressure system associated with the ex-tropical cyclone Laurence. The heaviest falls were recorded in the Hastings River catchment, with Kindee Bridge (Hastings River) recording a 24 hour total of 173 mm on the 27th of the December. Moist onshore winds and a low pressure trough contributed to more falls particularly for northeast NSW during the last 3 days of 2009. This resulted in major flooding of several northern inland rivers namely, Castlereagh, Darling (Bourke, Louth and Tilpa), and Namoi Rivers.

The Murray Darling Basin recorded a basin wide average of 61.3 mm, which is above the historical average1 of 45.9 mm.

Some sites had their highest total December rainfall on record.
Some sites had their lowest total December rainfall on record.
See a map of total rainfall. See a map of rainfall deciles.

Temperature

Average maximum temperature for the state was 31.9°C which is 1.4°C above the historical average1 of 30.5°C. The warm conditions were partly due to warm northerly winds ahead of several low pressure troughs which traversed across NSW. Western and northeastern NSW recorded maximum temperatures up to 2°C above average with parts of the North West Slopes and Plains, South West Slopes and Southern Tablelands Districts recording up to 3°C above average. December is the eleventh month this year with above average maximum temperatures, only April with an anomaly of only -0.03°C was cooler than average.

The average minimum temperature for the state was 17.0°C which is 0.9°C above the historical averge1 of 16.1°C. All of NSW recorded above average minimum temperatures with most of northeast, central and far southwest NSW recording up to 2°C above the December average. December is the nineth month this year with above average minimum temperatures.

Some sites had their highest December temperature on record.
Some sites had their highest December mean daily maximum temperature on record.
See a map of mean maximum temperatures.
See a map of maximum temperature anomalies.
Some sites had their lowest December temperature on record.
Some sites had their warmest December night (highest daily minimum temperature) on record.
Some sites had their highest December mean daily minimum temperature on record.
See a map of mean minimum temperatures.
See a map of minimum temperature anomalies.

Other phenomena

At the start of December over 100 fires were burning across the eastern half of NSW. Dry thunderstorms ignited fires in inaccessible bushland and warm, dry and windy conditions have made these and other fires difficult to contain. Widespread rainfall across NSW which began late on Christmas Day and continued through till the end of 2009 extinguished the fires and resulted in flooding in northern inland areas such as Coonamble, Dubbo, Gilgandra and Macquarie region amongst others.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in December 2009
Hottest day 43.7 °C at Collarenebri (Albert St) on the 8th
43.7 °C at Tibooburra Post Office on the 24th
Warmest days on average 36.1 °C at Collarenebri (Albert St)
Coolest days on average 15.6 °C at Thredbo AWS
Coldest day 7.1 °C at Thredbo AWS on the 11th
Coldest night -4.1 °C at Charlotte Pass (Kosciusko Chalet) on the 2nd
Coolest nights on average 4.5 °C at Charlotte Pass (Kosciusko Chalet)
Warmest nights on average 21.2 °C at Tibooburra Airport
Warmest night 31.4 °C at Fowlers Gap AWS on the 24th
Wettest overall 439.2 mm at Yarras (Mount Seaview)
Driest overall 7.0 mm at Menindee Post Office
Wettest day 173.0 mm at Kindee Bridge (Hastings River) on the 27th
Highest wind gust 113 km/h at Wilcannia Aerodrome AWS on the 17th

Record highest total December rainfall
Total rainfall
for December 2009 (mm)
Previous highest
for December
Years of
record
Average for
December
Wellington (Agrowplow) 173.1 163.6 in 1909 129 55.4
Yarras (Mount Seaview) 439.2 414.2 in 1988 60 173.8
Guyra (Gowan Brae) 287.6 244.4 in 1991 37 99.8



Record highest December temperature
Highest temperature
in December 2009 (°C)
Previous highest
for December
Years of
record
Average for
December
Moruya Heads Pilot Station 41.3 on the 17th 41.0 on the 21st in 1972 52 22.8
Camden Airport AWS 43.1 on the 17th 42.0 on the 22nd in 2002 34 28.5



Record highest December mean daily maximum temperature
Mean daily maximum
temperature
for December 2009 (°C)
Previous highest
for December
Years of
record
Average for
December
Lord Howe Island Aero 26.2 25.5 in 1997 21 23.9



Record highest December daily minimum temperature
Highest daily minimum
temperature
in December 2009 (°C)
Previous highest
for December
Years of
record
Average for
December
Hay (Miller Street) 30.3 on the 24th 29.0 on the 7th in 1990 53 14.9
Nyngan Airport 28.9 on the 17th = 28.9 on the 30th in 1965 51 17.8
Pindari Dam 23.7 on the 14th = 23.7 on the 18th in 1975 37 16.0
Griffith Airport AWS 30.0 on the 24th 29.3 on the 21st in 1994 34 15.0
Broken Hill Airport AWS 31.3 on the 24th 30.8 on the 21st in 2000 21 17.1



Record highest December mean daily minimum temperature
Mean daily minimum
temperature
for December 2009 (°C)
Previous highest
for December
Years of
record
Average for
December
Yarras (Mount Seaview) 18.0 17.7 in 1990 40 16.0
Glen Innes Ag Research Stn 13.6 13.5 in 1979 34 12.0
Nelson Bay (Nelson Head) 19.7 = 19.7 in 2005 23 17.2




Summary statistics for December 2009
Maximum temperatures
for December
(°C)
Minimum temperatures
for December
(°C)
Rainfall
for December
(millimetres)
Mean for
December
2009
Diff
from
average
Highest for
December
2009
Mean for
December
2009
Diff
from
average
Lowest for
December
2009
Total for
December
2009
Average
for
December
Rank of
December
2009
Fraction of
December
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 33.9   41.8 23rd 19.4   13.9 12th 26.6
Tibooburra Airport 35.0   42.8 24th 21.2   16.2 11th 35.4
Tibooburra Post Office 34.9 0.0 43.7 24th 21.1 +0.8 16.3 11th 44.2 21.8 high 203%
White Cliffs AWS 34.6   42.4 24th 20.7   16.1 11th 8.2
White Cliffs Post Office 34.1 -0.4 42.1 24th 19.9 +0.7 15.5 1st 10.0 25.2 average 40%
Wilcannia (Reid St) 34.2 +0.3 42.2 16th 18.0 -0.2 12.2 12th 9.8 26.0 average 38%
Wilcannia Aerodrome AWS 34.4   42.4 24th 18.3   12.2 12th 12.4
Western (Lower Darling) (district 47)
Broken Hill (Patton Street) 31.9 +0.5 41.0 23rd 18.1 +1.0 10.9 11th 18.2 21.5 average 85%
Broken Hill Airport AWS 31.7 +0.6 40.8 23rd 17.8 +0.7 11.5 11th 18.0 21.4 average 84%
Lake Victoria Storage     41.6 16th 15.8 +0.5 9.6 9th 15.3 19.1 average 80%
Menindee Post Office 34.3 +1.5 42.8 23rd 18.5 +1.8 12.2 9th 7.0 21.8 average 32%
Pooncarie Mail Agency 33.2   42.0 23rd 16.8   10.6 9th 15.8 21.3 average 74%
Western (Upper Darling) (district 48)
Bourke Airport AWS 35.5   43.2 8th 20.1   15.0 13th 60.4
Brewarrina Hospital 34.8 -0.3 42.8 8th 19.8 +0.9 11.9 12th 161.6 38.0 v high 425%
Cobar Airport AWS 33.2   41.5 16th 17.4   9.3 19th 30.4
Cobar MO 33.5 +0.9 41.9 16th 19.2 +0.5 13.3 9th 32.6 36.1 average 90%
Collarenebri (Albert St) 36.1 +1.4 43.7 8th     14.6 13th 124.4 52.6 high 237%
Lightning Ridge Visitors Information Cen 34.8   43.5 8th 20.0   14.5 28th 92.5
Wanaaring Post Office 34.8   41.9 16th 19.8   13.7 3rd 56.3 28.9 high 195%
Western (Southwest Plains) (district 49)
Balranald (RSL) 31.7 +0.8 40.9 23rd 15.6 +0.9 9.6 18th 11.8 24.9 average 47%
Ivanhoe Aerodrome AWS 33.4   41.7 17th 18.4   12.6 11th 10.2
Ivanhoe Post Office 34.6 +1.3 43.0 17th 17.7 +1.4 10.6 2nd 3.7 26.0 low 14%
Central Western Plains (South) (district 50)
Condobolin Airport AWS 32.7   43.0 17th 17.4   11.2 12th 106.6
Peak Hill Post Office 32.3 +0.9 40.9 17th 18.8 +1.6 11.6 12th 79.3 49.4 high 161%
West Wyalong Airport AWS 31.6   42.2 17th 15.8   10.1 9th 110.4
Central Western Plains (North) (district 51)
Coonamble Airport AWS 33.3   42.1 8th 18.8   12.0 2nd 161.6
Coonamble Comparison 33.6 -0.1 41.8 8th 19.1 +1.4 12.0 2nd 190.3 47.1 v high 404%
Nyngan Airport 33.5 +0.5 41.6 17th 19.3 +1.5 13.3 19th 59.9 42.6 high 141%
Trangie Research Station AWS 32.7 +0.8 41.7 17th 18.3 +1.8 11.2 12th 106.8 40.3 v high 265%
Northwest Plains (West) (district 52)
Mungindi Post Office 36.0 +1.5 43.2 8th 20.8 +1.9 13.0 12th 88.4 51.6 high 171%
Walgett Airport AWS 34.9   43.0 8th 18.8   11.3 12th 127.8
Northwest Plains (East) (district 53)
Moree Aero 34.1   42.3 8th 20.0   11.4 12th 123.2
Northwest Slopes (North) (district 54)
Barraba Post Office 32.8 +2.3 38.6 9th 16.6 +2.0 8.1 12th 58.2 77.2 average 75%
Narrabri Airport AWS 33.6   43.1 8th 19.3   12.3 12th 130.0
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 33.2   42.8 8th 17.6   9.7 12th 132.0
Gunnedah Pool 32.5 -0.5 41.2 8th 17.3 +0.5 3.2 29th 151.0 68.6 v high 220%
Gunnedah Resource Centre 32.3 +1.3 41.7 8th 19.2 +1.8 12.1 2nd 114.6 68.2 high 168%
Quirindi Post Office 32.9 +1.7 40.4 8th 17.2 +2.5 8.2 2nd 84.9 80.3 average 106%
Tamworth Airport AWS 32.8   41.4 8th 17.3   9.9 2nd 145.4
Woolbrook (Danglemah Road) 29.0 +2.8 35.5 9th 13.0 +2.5 3.5 2nd 162.4 97.0 high 167%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 27.3   33.9 8th 12.7   5.5 2nd 149.0
Armidale Airport AWS 26.8   33.5 8th 13.4   6.1 2nd 141.0
Glen Innes Ag Research Stn 26.7 +2.4 32.2 10th 13.6 +1.6 7.5 2nd 174.0 109.8 v high 158%
Glen Innes Airport AWS 27.1   33.2 10th 12.9   6.3 6th 156.0
Glen Innes Post Office 27.4 +1.6 33.5 9th 14.7 +2.6 8.9 2nd 234.2 108.5 v high 216%
Guyra Hospital 24.7 +2.2 31.4 10th 12.2 +1.6 5.0 2nd 181.6 113.8 v high 160%
Inverell (Raglan St) 31.1   37.4 9th 15.7   8.1 3rd 140.0
Tenterfield (Federation Park) 27.5 +0.8 35.2 10th 14.6 +1.6 6.5 3rd 93.4 105.1 average 89%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 28.5 +1.5 37.2 10th 17.2 +1.0 11.4 2nd 217.6 149.2 high 146%
Upper North Coast (district 58)
Ballina Airport AWS 29.1   32.9 9th 19.9   12.9 4th 104.2
Byron Bay (Cape Byron AWS) 27.1   31.8 13th 20.8   15.8 3rd 145.6
Casino Airport 32.3 +1.1 41.6 9th 20.1 +2.3 14.6 4th 169.0 114.9 high 147%
Casino Airport AWS 31.7   41.4 9th 19.6   13.7 4th 164.8
Evans Head RAAF Bombing Range AWS 28.9   36.7 8th 19.8   15.0 4th 143.0
Grafton Airport AWS 30.0   40.3 8th 18.7   13.5 4th 161.2
Grafton Olympic Pool 31.2 +1.5 42.5 8th 19.7 +1.3 14.9 2nd 170.5 120.4 high 142%
Grafton Research Stn 30.4   40.9 8th 19.3   14.1 3rd 119.4 101.5 average 118%
Lismore (Richmond Hill) 30.1   40.0 9th 19.2   13.5 4th 148.7
Lismore Airport AWS 31.6   40.9 9th 18.8   13.4 4th 62.2
Murwillumbah (Bray Park) 29.8 +0.6 36.1 9th 20.2 +1.8 16.0 4th 196.0 159.8 high 123%
Yamba Pilot Station 26.4 +0.5 28.1 26th 20.3 +1.2 15.8 2nd 147.4 116.2 high 127%
Lower North Coast (district 59)
Coffs Harbour MO 27.1 +0.8 30.9 8th 19.6 +1.5 14.0 2nd 109.2 140.8 average 78%
Dorrigo (Old Coramba Rd) 24.9   33.8 8th 15.2   8.5 2nd 234.7
Kempsey (Wide Street) 28.8 +0.2 33.8 8th 18.1 +1.6 12.0 2nd 170.7 109.5 high 156%
Kempsey Airport AWS 28.4   34.3 8th 17.5   11.4 2nd 153.6
South West Rocks (Smoky Cape Lighthouse) 27.6 +1.7 30.7 23rd 18.1 -0.3 - - 169.0 119.2 high 142%
Manning (district 60)
Forster - Tuncurry R.V.C.P. 25.5   29.5 11th 19.3   14.0 2nd 122.1 92.6 high 132%
Port Macquarie Airport AWS 27.4   31.0 18th 17.8   12.6 4th 181.8
Taree Airport AWS 27.8   35.0 25th 17.9   12.0 4th 129.6
Yarras (Mount Seaview) 29.4 +0.7 35.9 7th 18.0 +2.0 12.2 2nd 439.2 173.8 highest 253%
Hunter (district 61)
Cessnock (Nulkaba) 30.2 +0.7 41.1 17th 17.6 +1.5 8.6 3rd 87.5 70.6 average 124%
Cessnock Airport AWS 29.4   40.2 17th 16.6   7.1 3rd 75.0 77.3 average 97%
Cooranbong (Lake Macquarie AWS) 27.3   41.0 17th 17.0   8.2 3rd 74.8
Gosford (Narara Research Station) AWS 26.8 -0.1 37.4 17th 16.7 +1.5 9.2 3rd 117.2 102.8 average 114%
Jerrys Plains Post Office 31.8 +0.5 43.2 8th 17.3 +1.6 8.9 3rd 89.2 67.9 high 131%
Maitland Visitors Centre 28.7   41.0 17th 17.1   8.0 3rd 57.5
Mangrove Mountain AWS 27.0   39.5 17th 16.3   9.0 3rd 95.6
Merriwa (Roscommon) 31.0   41.2 8th 15.3   7.5 2nd 60.6 66.4 average 91%
Murrurundi Gap AWS 28.2   36.9 8th 15.3   8.2 2nd 103.4
Murrurundi Post Office 30.4 +0.6 39.1 8th 14.7 +1.1 5.5 3rd 107.2 89.5 high 120%
Nelson Bay (Nelson Head) 25.4 -0.9 30.0 7th 19.7 +2.5 14.1 2nd 85.5 95.3 average 90%
Newcastle Nobbys Signal Station AWS 24.1 -0.8 28.5 17th 19.4 +1.4 14.0 3rd 49.0 81.2 average 60%
Newcastle University 27.8   40.3 17th 18.6   10.2 3rd 64.3
Norah Head AWS 24.6   28.8 16th 19.1   13.4 2nd 84.6
Paterson (Tocal AWS) 29.4 +0.3 41.8 17th 17.1 +0.9 9.0 3rd 67.8 78.9 average 86%
Peats Ridge (Waratah Road) 26.4 +0.4 40.0 17th 16.1 +1.3 9.8 3rd 79.4 94.6 average 84%
Scone Airport AWS 31.3   42.6 8th 16.1   6.6 3rd 130.2
Singleton STP 30.5   41.0 17th 16.0   6.5 3rd 96.9
Williamtown RAAF 27.5 +0.3 38.7 7th 17.2 +0.7 10.2 3rd 62.2 79.9 average 78%
Central Tablelands (North) (district 62)
Gulgong Post Office 30.6 +0.9 39.1 8th 16.3 +1.4 9.2 2nd 164.7 66.0 v high 250%
Mudgee Airport AWS 29.5   38.7 8th 14.7   5.7 12th 154.4
Nullo Mountain AWS 23.3   31.9 8th 12.5   5.8 2nd 111.2
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 29.0 +2.7 36.5 17th 12.1 +0.5 3.5 12th 102.2 64.2 high 159%
Bathurst Airport AWS 28.5   36.5 17th 12.6   4.9 12th 100.8
Cowra Research Centre (Evans St) 31.5 +2.1 40.5 17th 15.5 +0.9 8.5 12th 71.5 55.4 average 129%
Katoomba (Murri St) 23.9 +1.5 33.0 17th 12.5 +0.9 5.2 1st 115.8 122.4 average 95%
Lithgow (Cooerwull) 25.9   34.0 17th 10.9   2.2 12th 81.5 77.0 average 106%
Mount Boyce AWS 24.0   33.2 17th 12.2   4.7 1st 93.4
Oberon (Springbank) 25.0 +1.7 33.0 17th 10.4 +1.6 3.1 3rd 95.4 72.9 high 131%
Orange Agricultural Institute 26.6 +2.2 34.0 17th 12.1 +0.8 4.5 2nd 128.2 78.5 high 163%
Orange Airport AWS 26.5   34.7 17th 10.7   1.6 12th 122.8
Orange Airport Comparison 26.2 +2.3 33.5 17th 11.4 +1.3 3.0 12th 109.0 74.0 high 147%
Springwood Bowling Club 27.9   40.1 17th 16.0   10.9 3rd 76.6 101.7 average 75%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 30.8 +0.2 38.5 8th 14.2 +1.0 5.7 3rd 214.8 69.3 v high 310%
Coonabarabran Airport AWS 29.8   38.6 8th 16.8   8.4 2nd 169.6
Dunedoo Post Office 32.0 +1.2 40.6 8th 16.8 +1.9 9.6 13th 149.0 60.5 v high 246%
Central Western Slopes (South) (district 65)
Cowra Airport Comparison 32.2 +2.0 41.1 17th 15.3 +2.3 8.4 12th 68.1 50.5 high 135%
Dubbo Airport AWS 31.6   40.4 17th 16.9   11.1 12th 188.8
Forbes Airport AWS 32.8   42.7 17th 15.8   8.6 12th 92.4
Parkes (Macarthur Street) 32.7 +2.0 41.2 16th 17.1 +0.9 10.4 12th 33.0 51.0 average 65%
Parkes Airport AWS 31.9   41.0 17th 15.5   8.0 12th 46.6 43.7 average 107%
Wellington (Agrowplow) 31.7 +0.1 39.3 17th 16.5 +1.5 8.9 2nd 173.1 55.4 highest 312%
Metropolitan (East) (district 66)
Bankstown Airport AWS 28.0 +0.7 41.2 17th 17.4 +0.8 12.3 3rd 30.0 67.0 low 45%
Canterbury Racecourse AWS 26.5   38.5 17th 17.6   12.4 3rd 40.6
Holsworthy Control Range 28.5   42.0 17th 16.6   11.0 3rd 39.8
Parramatta North (Masons Drive) 28.2 +0.7 41.8 17th 17.2 +1.0 13.0 2nd 64.2 69.8 average 92%
Sydney (Observatory Hill) 25.5 +0.3 32.0 17th 19.0 +1.5 13.5 2nd 66.8 77.8 average 86%
Sydney Airport AMO 26.4 +0.7 32.6 17th 19.2 +1.8 13.2 2nd 59.0 73.4 average 80%
Sydney Olympic Park (Sydney Olympic Pk A 27.5   40.3 17th 18.5   13.2 2nd 62.0
Terrey Hills AWS 25.3   35.2 17th 17.4   11.8 1st 78.2
Metropolitan (West) (district 67)
Badgerys Creek AWS 29.7   42.5 17th 16.3   10.1 3rd 51.6
Horsley Park Equestrian Centre AWS 28.9   41.9 17th 16.6   10.9 3rd 65.8
Liverpool (Michael Wenden Centre) 28.9   42.0 17th 16.8   11.0 3rd 65.8
Penrith Lakes AWS 30.7   42.3 17th 17.8   12.6 3rd 31.4
Prospect Reservoir 29.1 +1.7 41.7 17th 17.0 +0.7 11.1 3rd 63.2 75.0 average 84%
Richmond RAAF 30.1   42.1 17th 17.0   10.8 3rd 55.4
Illawarra (district 68)
Albion Park (Wollongong Airport) 25.8   32.0 17th 15.6   10.0 5th 70.4
Bellambi AWS 23.8   28.0 17th 17.8   12.7 2nd 76.0
Bowral (Parry Drive) 25.3 +1.4 37.0 17th 12.8 +1.3 6.5 1st 99.6 73.7 high 135%
Camden Airport AWS 29.9 +1.4 43.1 17th 15.9 +0.8 10.1 3rd 60.4 54.8 average 110%
Campbelltown (Mount Annan) 29.5   42.1 17th 15.7   9.7 3rd 55.6
Kiama (Bombo Headland) 23.3   27.3 17th 17.3   13.2 2nd 106.2
Moss Vale AWS 25.4   37.9 17th 12.6   7.0 1st 84.0
Nowra RAN Air Station AWS 27.2   43.0 17th 14.8   8.5 12th 105.4
South Coast (district 69)
Batemans Bay (Catalina Country Club) 25.4   42.1 17th 14.2   9.1 12th 60.3 79.9 average 75%
Bega AWS 26.8   42.4 17th 14.1   9.2 12th 20.2
Braidwood Racecourse AWS 26.4   37.0 17th 10.6   2.5 12th 80.4 60.0 high 134%
Green Cape AWS 23.2   28.0 17th 16.3   12.4 1st 25.4
Merimbula Airport AWS 24.3   42.0 17th 14.4   9.0 12th 16.4
Montague Island Lighthouse 21.7 0.0 25.6 17th 16.3 +0.4 12.7 1st 37.0 64.5 average 57%
Moruya Airport AWS 24.2   43.0 17th 14.3   10.0 6th 46.0
Moruya Heads Pilot Station 23.7 +0.9 41.3 17th 15.6 +0.9 11.9 12th 47.0 73.7 average 64%
Narooma RVCP 22.9 +1.0 26.0 10th 15.8 +0.8 12.7 1st 44.7 72.3 average 62%
Nerriga Composite 26.4 +1.7 38.0 17th 11.2 +0.4 3.0 2nd 79.4 64.6 average 123%
Ulladulla AWS 22.9   27.2 10th 16.1   12.6 2nd 108.8
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 26.2 +2.4 36.2 17th 9.6 +0.8 4.0 12th 47.0 63.6 average 74%
Bombala AWS 24.8   36.1 17th 9.4   3.8 12th 47.6
Canberra Airport 28.8 +2.7 38.8 17th 12.5 +1.2 6.2 1st 77.0 53.8 high 143%
Canberra Airport Comparison 29.2   39.1 17th 12.1   6.0 2nd 42.6
Cooma Airport AWS 26.3   34.8 17th 8.6   -2.6 2nd 35.6 52.2 average 68%
Cooma Visitors Centre 27.0 +1.9 35.0 17th 8.8 -0.2 1.0 2nd 62.4 53.1 average 118%
Goulburn Airport AWS 27.7   37.9 17th 11.0   1.3 1st 85.8
Goulburn TAFE 28.5 +2.7 37.5 17th 12.1 +0.4 4.6 2nd 92.4 57.9 high 160%
Mount Ginini AWS 19.3   27.3 17th 7.8   -1.7 1st 111.4
Taralga Post Office 27.6 +3.3 36.4 17th 9.8 0.0 0.9 2nd 88.2 65.8 average 134%
Tuggeranong (Isabella Plains) AWS 29.0   38.2 17th 12.4   7.0 2nd 98.4
Yass (Linton Hostel) 29.5 +1.8 38.2 17th 12.7 +0.8 6.4 2nd 112.0 54.6 v high 205%
Southern Tablelands (Snowy Mountains) (district 71)
Charlotte Pass (Kosciusko Chalet) 17.4 +1.9 24.9 17th 4.5 +0.9 -4.1 2nd 141.4 154.0 average 92%
Thredbo AWS 15.6 +1.5 23.3 17th 5.2 +0.5 -3.2 2nd 108.0 111.3 average 97%
Thredbo Village 20.9 +1.8 29.5 17th 5.8 +0.5 -0.5 2nd 135.6 119.2 average 114%
Southwest Slopes (South) (district 72)
Albury Airport AWS 31.0   40.3 17th 14.3   9.0 12th 15.0
Cabramurra SMHEA AWS 19.9   28.2 17th 9.9   1.0 1st 48.2
Hume Reservoir 30.9 +2.4 38.9 17th 15.3 +1.0 8.2 12th 17.2 49.1 low 35%
Khancoban AWS 29.7   39.7 17th 11.0   4.6 1st 51.8
Tumbarumba Post Office 28.1 +2.3 37.0 17th 10.3 +0.9 3.4 2nd 92.8 70.2 high 132%
Wagga Wagga AMO 31.8 +2.4 42.3 17th 14.5 +0.8 8.0 12th 65.0 44.7 high 145%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 30.7 +3.2 40.6 17th 14.2 +0.6 7.7 1st 108.8 60.6 high 180%
Cootamundra Airport 30.6   41.0 17th 13.2   6.0 12th 78.0
Grenfell (Quondong Rd) 30.9 +1.0 40.1 17th 16.0 +1.5 9.8 1st 131.0 53.7 v high 244%
Gundagai (William St) 31.7   42.0 17th 14.5   7.2 1st 67.0
Quandialla Post Office 32.5 +1.1 42.2 17th 15.9 +1.0 8.5 12th 106.8 43.7 high 244%
Temora Airport 31.7   42.6 17th 14.0   7.0 12th 43.6
Wyalong Post Office 31.9 +1.3 42.2 17th 17.0 +1.7 11.0 9th 128.8 43.6 v high 295%
Young Airport 30.5   40.9 17th 12.2   3.7 12th 128.4
Riverina (East) (district 74)
Corowa Airport 31.1 +1.0 40.4 17th 14.2 +0.6 7.6 9th 19.6 40.4 average 49%
Deniliquin Airport AWS 31.4   40.1 23rd 15.0   7.9 11th 9.6
Narrandera Airport 32.1   42.2 17th 15.5   9.4 12th 51.2 36.3 high 141%
Narrandera Golf Club 31.5 +1.1 40.8 17th 15.5 +0.4 9.0 12th 49.9 37.2 high 134%
Tocumwal Airport 31.2 +1.8 40.0 17th 14.7 +0.8 8.6 9th 9.2 33.5 average 27%
Yanco Agricultural Institute 31.7   41.5 17th 16.9   10.4 9th 57.4
Riverina (West) (district 75)
Griffith Airport AWS 31.9 +1.1 41.0 17th 16.2 +1.2 10.5 9th 77.6 32.7 v high 237%
Hay (Miller Street) 32.2 +1.0 41.3 23rd 16.4 +1.5 10.2 9th 22.4 26.8 average 84%
Hay Airport AWS 32.4   42.1 17th 16.2   9.8 9th 20.2
Hillston Airport 32.8 +1.3 42.0 17th 16.3 -0.1 10.2 9th 44.0 29.5 high 149%
Lake Cargelligo Airport 33.6 +1.1 43.5 17th 17.5 +0.8 11.6 9th 59.9 36.3 high 166%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in New South Wales 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 Monday 4 January 2010. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

A note about deciles: Deciles are used to give an element (in this case rainfall or temperature) a ranking. Deciles are calculated by arranging the totals in ascending order (from lowest to highest) then splitting them into 10 equal groups (thus the groups are called deciles). The first group would be in decile range one, the second group in decile range two, etc up to the highest annual totals (highest 10 per cent) being in decile range 10.

1Averages: Averages are based on the period 1961 to 1990 which is a convention of the World Meteorological Organisation

Normals are long-term averages 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 20 years of record for temperature and less than 30 years of record for rainfall, as they cannot then be calculated reliably.

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