NSW in December 2012: Warmest December since 2005

  • Driest December since 2006
  • Warmest December days since 2005
  • Warmest December nights since 2003

Rainfall

NSW recorded a statewide average rainfall of 31.7 mm during December, below the historical average of 53.8 mm and the driest December since 2006. Rainfall was average to above average in northeast NSW and along the southern tablelands and below average elsewhere, with driest conditions in northwest NSW and along the south coast. The Murray-Darling Basin also recorded 30.1 mm, well below the average of 48.5 mm and the driest since 2006.

Rainfall was light and persistent in northeast NSW, with showers and thunderstorms in this region throughout the month. Fronts also produced rain in southern NSW on the 15th-16th, while the most significant period of rainfall fell between the 24th and 26th. During these days a low pressure trough triggered widespread thunderstorm activity across the state, with up to 65.8 mm at Burrinjuck Dam in southeast NSW on the 24th, and as much as 101.4 mm at Yarras in the northeast on the 26th.

Some sites had their lowest total December rainfall on record.

Temperature

NSW recorded a statewide average maximum temperature of 32.5 °C during December, 1.9 °C above the historical average. This is the twelth-warmest December since records began in 1910, and the warmest for NSW since 2005. Temperatures were above average across the state, with days more than 2 °C above normal in northwest NSW where rainfall was lowest.

The statewide average minimum temperature was 17.6 °C, 1.5 °C above the historical average. This was also the twelth-warmest on record for NSW, and the warmest December since 2003, with warmer than average nights across the state. Nights were particularly warm on the 1st, when much of the state was more than 6 °C above normal and records were broken at three stations, while a cold spell on the 6th broke low temperature records at two short-record stations in the southeast.

The statewide average temperature was consequently 1.7 °C above average, the eleventh warmest December for NSW since records began in 1910 and the warmest December since 2005.

See a list of December temperature records.

Other phenomena

Thunderstorms and strong winds caused damage in Merriwa on the 2nd and Tamworth on the 3rd, with reports of cricket-ball sized hail at Tamworth, while widespread hail and downed trees were reported near Wollombi on the 9th.Widespread thunderstorm activity impacted the state between the 23rd and 25th, with wind gusts reaching 104 km/hr at Temora on the 23rd and 111 km/h at Khancoban on the 24th.

Further information

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Extremes in December 2012
Hottest day 44.2 °C at Wilcannia (Reid St) on the 24th
Warmest days on average 37.5 °C at Wanaaring Post Office
Coolest days on average 14.1 °C at Thredbo AWS
Coldest day 4.9 °C at Thredbo AWS on the 4th
Coldest night -5.3 °C at Perisher Valley AWS on the 10th
Coolest nights on average 4.3 °C at Perisher Valley AWS
Warmest nights on average 22.4 °C at Tibooburra Post Office
Warmest night 30.8 °C at Ivanhoe Aerodrome AWS on the 24th
Warmest on average overall 29.8 °C at Wanaaring Post Office
Coolest on average overall 9.5 °C at Thredbo AWS
Wettest overall 306.6 mm at Yarras (Mount Seaview)
Wettest day 101.4 mm at Yarras (Mount Seaview) on the 26th
Highest wind gust 111 km/h at Khancoban AWS on the 24th

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 lowest total December rainfall
Total rainfall
for December 2012 (mm)
Previous driest
for December
Years of
record
Average for
December
Cooma Airport AWS 11.2 13.6 in 2005 27 51.5
Lord Howe Island Aero 22.4 24.6 in 2009 25 103.7
Beaumont (The Cedars) 37.6 42.0 in 2005 20 102.4


Record highest December daily minimum temperature
Highest daily minimum
temperature
in December 2012 (°C)
Previous warmest
for December
Years of
record
Average for
December
Dunedoo Post Office 27.5 on the 1st 26.9 on the 1st in 2004 46 15.0
Bombala (Therry Street) 19.3 on the 1st 18.3 on the 23rd in 2006 45 8.8
Batemans Bay (Catalina Country Club) 21.8 on the 1st 21.5 on the 22nd in 2007 22 13.9
Mudgee Airport AWS 22.8 on the 20th 21.3 on the 23rd in 2006 22 13.4


Record lowest December temperature
Lowest temperature
in December 2012 (°C)
Previous coolest
for December
Years of
record
Average for
December
Braidwood Racecourse AWS -0.4 on the 6th -0.3 on the 27th in 2001 23 10.3
Bombala AWS -0.9 on the 10th -0.3 on the 31st in 1991 22 8.9
Goulburn Airport AWS -1.2 on the 6th -0.6 on the 5th in 2011 22 10.6


Record highest December mean daily minimum temperature
Mean daily minimum
temperature
for December 2012 (°C)
Previous warmest
for December
Years of
record
Average for
December
Yarras (Mount Seaview) 18.1 18.0 in 2009 43 16.1


Summary statistics for December 2012
Maximum temperatures
for December
(°C)
Minimum temperatures
for December
(°C)
Rainfall
for December
(millimetres)
Mean for
December
2012
Diff
from
average
Highest for
December
2012
Mean for
December
2012
Diff
from
average
Lowest for
December
2012
Total for
December
2012
Average
for
December
Rank of
December
2012
Fraction of
December
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 35.1   42.6 24th 19.5   12.5 5th 4.6
Tibooburra Airport 36.9   42.4 24th 22.3   15.1 5th 3.0
Tibooburra Post Office 36.8 +1.9 43.5 24th 22.4 +2.1 15.4 5th 2.8 22.1 low 13%
White Cliffs AWS 35.9   42.6 23rd 21.1   13.9 5th 1.0
Wilcannia (Reid St) 35.8 +1.9 44.2 24th 19.4 +1.2 13.2 5th 4.2 26.0 low 16%
Wilcannia Aerodrome AWS 35.8   43.8 24th 18.4   11.7 6th 1.6
Western (Lower Darling) (district 47)
Broken Hill (Patton Street) 33.1 +1.8 41.8 23rd 17.8 +0.7 9.7 5th 11.8 21.8 average 54%
Broken Hill Airport AWS 32.8 +1.8 40.9 23rd 16.7 -0.3 9.3 5th 11.2 21.7 average 52%
Lake Victoria Storage 31.7 +1.4 41.2 19th 15.3 0.0 9.5 5th 7.0 20.7 average 34%
Menindee Post Office 33.9 +1.1 43.0 23rd 18.2 +1.4 11.6 5th 7.2 21.8 average 33%
Pooncarie Mail Agency 33.9   43.0 23rd 16.9   11.2 5th 19.6 21.5 average 91%
Western (Upper Darling) (district 48)
Bourke Airport AWS 37.4   42.5 1st 21.0   12.8 6th 0
Brewarrina Hospital 36.7 +1.7 43.0 1st 20.0 +1.1 11.3 6th 17.9 39.1 average 46%
Cobar Airport AWS 34.8   41.1 24th 18.8   10.4 6th 15.6
Cobar MO 34.2 +1.7 40.7 24th 19.8 +1.1 13.0 6th 6.4 36.3 low 18%
Collarenebri (Albert St)     43.0 1st 20.7 +1.7 13.7 6th 39.1 53.6 average 73%
Lightning Ridge Visitors Information Cen 36.4   43.5 2nd 21.3   15.0 7th 105.5
Wanaaring Post Office 37.5 +2.8 42.2 25th 22.3 +2.7 14.4 6th 1.2 29.0 low 4%
Western (Southwest Plains) (district 49)
Balranald (RSL)     41.8 23rd 15.9 +1.2 8.5 6th 28.8 25.6 average 113%
Ivanhoe Aerodrome AWS 33.9   42.7 23rd 17.7   10.7 6th 4.8
Central Western Plains (South) (district 50)
Condobolin Airport AWS 34.0   41.7 24th 16.6   10.6 21st 9.2
Peak Hill Post Office 33.1 +1.9 39.1 24th 18.8 +1.6 8.8 6th 10.0 50.4 low 20%
West Wyalong Airport AWS 31.9   39.8 24th 15.2   8.4 6th 19.2
Central Western Plains (North) (district 51)
Coonamble Airport AWS 35.5   42.8 1st 18.7   9.3 5th 6.0
Trangie Research Station AWS 34.7 +2.9 40.9 1st 18.2 +1.7 9.8 5th 5.4 41.1 v low 13%
Northwest Plains (West) (district 52)
Mungindi Post Office 37.1 +2.7 43.5 2nd 20.5 +1.6 12.3 6th 32.6 52.2 average 62%
Walgett Airport AWS 37.0   41.2 19th 19.9   12.7 7th 10.2 55.2 low 18%
Northwest Plains (East) (district 53)
Moree Aero 34.5   40.3 2nd 19.5   11.5 6th 76.2
Northwest Slopes (North) (district 54)
Barraba Post Office 33.1 +2.7 38.9 1st     10.2 6th 76.1 77.9 average 98%
Narrabri Airport AWS 35.0   40.8 1st 19.2   10.8 6th 33.8
Pindari Dam 32.1 +2.0 38.4 2nd     9.0 6th 144.4 93.0 high 155%
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 34.4   40.9 1st 16.8   8.0 6th 62.6
Gunnedah Resource Centre 33.7 +2.8 40.7 1st 18.8 +1.4 11.7 6th 70.0 71.5 average 98%
Quirindi Post Office 33.1 +2.0 40.4 1st 15.9 +1.2 8.0 6th 68.2 80.5 average 85%
Tamworth Airport AWS 32.6 +2.6 39.7 1st 16.6 +1.2 7.5 6th 96.8 75.0 high 129%
Woolbrook (Danglemah Road) 27.1 +1.0 33.0 19th 12.2 +1.6 1.5 6th 157.2 99.7 high 158%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 26.5   33.1 2nd 12.6   3.0 6th 93.0
Armidale Airport AWS 26.0   32.9 2nd 13.1   6.1 6th 80.2
Glen Innes Airport AWS 25.8   32.1 17th 12.4   2.6 6th 152.8
Guyra Hospital 23.8 +1.4 29.6 2nd 12.1 +1.4 4.4 6th 108.8 113.4 average 96%
Inverell (Raglan St) 30.7   36.6 17th 14.9   6.5 6th 154.0
Inverell Research Centre 30.4 +2.2 36.3 2nd 16.3 +1.3 9.7 6th 101.4 99.3 average 102%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 28.2 +1.4 35.8 17th 16.8 +0.7 13.0 15th 131.4 152.4 average 86%
Upper North Coast (district 58)
Ballina Airport AWS 28.2 +0.9 35.0 4th 19.3 +1.2 13.4 15th 135.4 142.5 average 95%
Byron Bay (Cape Byron AWS) 27.0   31.4 19th 20.6   17.9 14th 138.4
Casino Airport AWS 30.4   37.4 4th 18.8   13.5 15th 38.8
Evans Head RAAF Bombing Range AWS 29.0   34.8 17th 19.4   16.4 14th 54.8
Grafton Airport AWS 30.3   36.3 2nd 18.2   12.7 6th 99.6
Grafton Olympic Pool 30.7 +1.1 36.4 4th 19.8 +1.4 15.1 6th 131.2 120.5 average 109%
Grafton Research Stn 30.8   36.7 1st 19.0   15.2 15th 84.0 101.2 average 83%
Lismore (Richmond Hill) 29.5   36.6 4th 18.3   14.2 15th 100.6
Lismore Airport AWS 29.8   36.9 4th 17.4   12.1 15th 117.8
Murwillumbah (Bray Park) 29.2 +0.1 38.4 4th 18.9 +0.5 13.4 6th 170.8 170.2 average 100%
Yamba Pilot Station 27.2 +1.3 32.4 5th 20.3 +1.2 16.8 14th 106.0 117.0 average 91%
Lower North Coast (district 59)
Coffs Harbour MO 27.0 +0.7 30.5 16th 19.2 +1.1 14.0 6th 78.0 144.6 average 54%
Dorrigo (Old Coramba Rd) 24.1   33.0 1st 15.1   8.5 6th 204.8
Kempsey (Wide Street) 29.5 +1.0 35.0 2nd 18.6 +2.1 11.9 7th 53.6 110.0 low 49%
Kempsey Airport AWS 29.5   35.3 2nd 17.1   9.4 6th 40.0
South West Rocks (Smoky Cape Lighthouse) 27.5 +1.6 30.4 25th 19.7 +1.3 16.0 6th 85.6 118.9 average 72%
Manning (district 60)
Forster - Tuncurry Marine Rescue 26.4   34.5 20th 18.2   11.0 29th 60.7 92.6 average 66%
Port Macquarie Airport AWS 28.0   31.5 2nd 17.9   9.3 6th 99.2
Taree Airport AWS 28.7   36.8 20th 18.2   11.1 6th 43.6
Yarras (Mount Seaview) 29.8 +1.3 38.4 1st 18.1 +2.0 10.8 5th 306.6 179.6 high 171%
Hunter (district 61)
Cessnock Airport AWS 30.0 +1.3 38.5 24th 16.0 +1.2 6.2 6th 38.4 75.8 v low 51%
Cooranbong (Lake Macquarie AWS) 27.4   36.1 1st 15.9   8.8 5th 65.0
Gosford (Narara Research Station) AWS 26.7 -0.1 35.7 1st 16.0 +0.7 9.1 6th 118.8 104.2 average 114%
Maitland Visitors Centre 29.2   38.2 16th 17.2   9.5 6th 45.2
Mangrove Mountain AWS 26.9   36.9 24th 15.5   9.1 6th 111.4
Merriwa (Roscommon) 31.8   40.8 1st 15.0   7.6 5th 57.2 69.2 average 83%
Murrurundi Gap AWS 27.8   35.5 1st 15.0   9.7 7th 96.6
Murrurundi Post Office 30.1 +0.4 38.1 1st 14.5 +0.9 5.9 6th 110.4 90.0 high 123%
Nelson Bay (Nelson Head) 25.8 -0.3 31.0 20th 19.4 +2.0 16.4 6th
Newcastle Nobbys Signal Station AWS 25.0 +0.1 34.0 28th 19.1 +1.1 15.0 6th 91.4 81.1 average 113%
Newcastle University 28.2   36.7 16th 18.2   11.7 6th 54.2
Norah Head AWS 25.0   31.8 20th 18.7   14.6 5th 68.4
Paterson (Tocal AWS) 29.8 +0.8 38.1 17th 16.9 +0.7 10.4 6th 74.2 79.4 average 93%
Scone Airport AWS 31.9 +2.4 41.7 1st 15.6 +0.4 8.7 6th 38.6
Singleton STP 31.0   38.8 16th 16.4   10.2 5th 58.0
Williamtown RAAF 27.9 +0.7 36.7 16th 17.6 +1.1 10.8 6th 84.6 79.7 average 106%
Central Tablelands (North) (district 62)
Gulgong Post Office 31.8 +2.3 38.2 1st 14.8 0.0 7.5 5th 77.2 67.5 average 114%
Mudgee Airport AWS 31.2 +3.1 38.1 1st 14.7 +1.3 4.5 6th 72.4
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 28.4 +2.1 35.0 24th 12.2 +0.6 3.0 6th 6.2 65.6 v low 9%
Bathurst Airport AWS 28.8 +2.7 34.5 24th 12.1 +0.7 4.5 6th 52.6
Katoomba (Murri St) 22.9 +0.5 30.9 24th 12.2 +0.6 6.6 6th 70.8 123.2 average 57%
Lithgow (Cooerwull) 24.9   32.1 1st 11.4   2.4 6th 64.1 78.0 average 82%
Mount Boyce AWS 23.2 +1.2 32.0 24th 11.7 +0.4 5.8 6th 73.6
Oberon (Springbank) 24.4 +1.3 31.0 24th 10.3 +1.5 1.4 6th 30.4 73.8 low 41%
Orange Agricultural Institute 26.7 +2.4 31.8 24th 12.3 +1.1 4.9 6th 25.7 83.2 low 31%
Orange Airport AWS 26.3   32.6 24th 11.1   2.8 6th 30.2
Springwood (Valley Heights) 27.0   37.0 24th 15.4   10.0 6th 41.2 101.7 low 41%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 32.0 +1.5 38.6 1st 13.8 +0.6 6.0 6th 41.2 71.3 average 58%
Coonabarabran Airport AWS 31.2   38.2 1st 16.1   11.2 6th 37.6
Dunedoo Post Office 33.1 +2.4 40.8 1st 16.7 +1.7 7.1 6th 55.2 62.7 average 88%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 32.0   38.2 24th 14.6   4.4 6th 42.4
Dubbo Airport AWS 33.9   39.9 1st 16.9   7.3 6th 5.4
Forbes Airport AWS 32.9   40.0 24th 15.6   8.6 6th 16.6
Parkes Airport AWS 32.3   38.8 24th 15.1   4.7 6th 14.4 52.7 low 27%
Wellington (Agrowplow) 33.0 +1.5 39.1 1st 15.8 +0.8 6.9 6th 5.6 56.0 v low 10%
Metropolitan (East) (district 66)
Bankstown Airport AWS 28.2 +1.0 37.8 1st 17.2 +0.6 10.2 6th 34.2 67.4 average 51%
Canterbury Racecourse AWS 26.9   36.0 1st 17.0   9.6 6th 38.0
Holsworthy Aerodrome AWS 27.6   37.4 1st 16.5   8.3 6th 27.4
Holsworthy Control Range 27.7   37.3 1st 15.9   8.2 6th 25.0
Parramatta North (Masons Drive) 28.0 +0.6 38.0 24th 16.6 +0.4 9.6 6th 38.6 70.9 low 54%
Sydney (Observatory Hill) 26.0 +0.8 33.0 20th 18.6 +1.1 14.0 6th 45.2 77.6 average 58%
Sydney Airport AMO 26.9 +1.2 36.2 1st 18.7 +1.2 14.4 6th 26.0 73.7 low 35%
Sydney Harbour (Wedding Cake West) 23.2   33.3 20th 18.7   15.7 6th
Sydney Olympic Park AWS (Archery Centre) 27.6   37.1 1st 17.5   11.4 6th 44.6
Terrey Hills AWS 25.8   34.0 28th 16.5   11.6 6th 48.4
Metropolitan (West) (district 67)
Badgerys Creek AWS 28.9   39.7 24th 16.1   8.2 6th 36.6
Horsley Park Equestrian Centre AWS 28.5   38.6 24th 16.5   9.8 6th 39.0
Penrith Lakes AWS 29.5   38.8 24th 17.1   10.5 6th 28.0
Prospect Reservoir 28.4 +1.0 37.8 1st 16.9 +0.6 10.5 6th 43.8 75.3 average 58%
Richmond RAAF 29.4   38.8 24th 16.4   8.1 6th 48.2
Illawarra (district 68)
Albion Park (Wollongong Airport) 25.7   37.9 1st 15.3   6.1 6th 30.2
Bellambi AWS 23.5   30.6 20th 17.6   12.4 6th 34.2
Bowral (Parry Drive) 24.0 +0.2 33.6 24th 12.9 +1.3 4.9 6th 45.4 75.5 low 60%
Camden Airport AWS 29.1 +0.7 39.4 24th 15.8 +0.7 7.0 6th 38.6 54.9 average 70%
Campbelltown (Mount Annan) 27.8   38.2 24th 15.4   7.1 6th 33.4
Jervis Bay (Point Perpendicular AWS) 23.3   33.8 1st 16.9   12.2 6th 36.8
Kiama (Bombo Headland) 23.6   32.0 1st 17.3   12.4 6th 53.8
Moss Vale AWS 24.0   34.5 24th 12.4   2.2 6th 27.8
Nowra RAN Air Station AWS 26.3   35.9 1st 14.6   7.4 6th 26.6
Port Kembla NTC AWS 22.7   32.3 1st 18.0   13.0 6th
South Coast (district 69)
Batemans Bay (Catalina Country Club) 24.5 +0.1 34.7 1st 14.7 +0.8 8.9 27th 31.8 76.8 v low 41%
Bega AWS 25.9 +1.1 37.9 24th 13.0 -0.2 6.7 10th 16.6
Braidwood Racecourse AWS 25.0 +0.8 33.8 24th 10.4 +0.1 -0.4 6th 31.4 60.7 low 52%
Green Cape AWS 21.7   26.9 1st 15.8   11.8 5th 27.8
Merimbula Airport AWS 23.2   29.6 1st 13.7   7.5 5th 45.8
Montague Island Lighthouse 21.5 -0.2 29.7 1st 16.6 +0.7 13.1 6th 30.8 65.4 low 47%
Moruya Airport AWS 23.7   36.1 1st 14.6   8.8 5th 32.8
Moruya Heads Pilot Station 22.7 -0.1 34.0 1st 15.5 +0.8 11.0 6th 36.8 73.5 average 50%
Narooma (Marine Rescue) 21.9 0.0 27.8 1st 15.5 +0.5 11.8 6th 36.0 73.1 average 49%
Ulladulla AWS 22.7 -0.1 32.0 1st 16.1 +0.4 12.0 6th 58.4
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 23.8 0.0 32.7 19th 9.4 +0.6 0.4 10th 30.8 63.6 low 48%
Bombala AWS 23.3 +0.4 33.8 23rd 8.6 -0.3 -0.9 10th 62.8
Canberra Airport 27.6   34.1 24th 11.8   0.3 6th 37.0
Cooma Airport AWS 24.2 +0.4 32.3 23rd 8.0 -0.5 -2.2 6th 11.2 51.5 lowest 22%
Cooma Visitors Centre 25.4 +0.4 33.0 23rd 8.9 -0.1 -0.5 6th 20.5 54.7 low 37%
Goulburn Airport AWS 26.7 +1.3 34.2 19th 10.9 +0.3 -1.2 6th 45.2
Goulburn TAFE 26.6 +0.9 34.5 19th 12.9 +1.2 4.4 6th 44.2 61.7 average 72%
Mount Ginini AWS 17.6   24.9 23rd 7.1   -0.9 5th 71.2
Taralga Post Office 25.2 +0.9 33.5 23rd 10.9 +1.2 2.0 6th 39.7 66.4 average 60%
Tuggeranong (Isabella Plains) AWS 27.2   34.2 23rd 12.8   2.2 6th 20.0
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 15.9   22.2 23rd 4.3   -5.3 10th 167.6
Thredbo AWS 14.1 0.0 20.1 23rd 4.9 +0.2 -3.6 10th 98.4 109.8 average 90%
Thredbo Village 19.1 0.0 25.8 23rd 5.3 0.0 -2.0 10th 86.2 122.1 low 71%
Southwest Slopes (South) (district 72)
Albury Airport AWS 29.8   37.8 24th 13.9   6.8 6th 27.8
Cabramurra SMHEA AWS 18.1   25.1 23rd 8.9   -0.2 5th 104.8
Hume Reservoir 28.9 +0.4 36.5 24th 14.2 -0.1 7.9 6th 28.0 49.5 average 57%
Khancoban AWS 28.4   35.4 23rd 10.9   2.8 6th 43.4
Tumbarumba Post Office 26.9 +1.1 33.5 23rd 10.7 +1.2 1.2 6th 52.6 70.8 average 74%
Wagga Wagga AMO 30.6 +1.3 39.1 23rd 14.5 +0.7 6.0 6th 21.8 46.3 average 47%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 29.2 +1.7 37.0 9th 14.5 +0.9 6.0 6th 93.8 62.9 high 149%
Cootamundra Airport 29.7   38.0 30th 13.2   3.0 6th 29.4
Grenfell (Manganese Rd) 30.6 +0.7 37.1 23rd 14.1 -0.4 6.0 6th 38.2 55.1 average 69%
Gundagai (William St) 30.4   37.7 24th 14.3   6.0 6th 39.2
Quandialla Post Office 31.9 +0.6 38.8 23rd 15.6 +0.7 7.6 6th 50.6 44.4 high 114%
Temora Airport 31.1   38.7 23rd 13.9   6.0 6th 29.8
Wyalong Post Office 31.6 +1.0 38.0 26th 16.4 +1.1 10.2 6th 15.9 44.2 low 36%
Young Airport 30.2 +1.4 36.5 23rd 12.0 +0.2 1.8 6th 43.0
Riverina (East) (district 74)
Corowa Airport 30.2 +0.1 40.0 23rd 13.9 +0.3 8.5 6th 23.4 40.8 average 57%
Deniliquin Airport AWS 30.7   41.2 23rd 14.6   7.9 6th 10.4
Narrandera Airport 31.8   41.3 23rd 15.4   7.4 6th 10.2 35.7 low 29%
Tocumwal Airport 30.1 +0.7 39.4 23rd 14.5 +0.5 9.7 6th 30.0 33.9 average 88%
Yanco Agricultural Institute 31.3   39.6 23rd 16.3   8.5 6th 32.4 30.1 average 108%
Riverina (West) (district 75)
Griffith Airport AWS 31.5 +0.7 40.6 23rd 15.9 +0.8 7.8 6th 8.6 32.8 low 26%
Hay (Miller Street) 32.5 +1.3 42.2 23rd 16.0 +1.1 8.8 6th 14.6 26.9 average 54%
Hay Airport AWS 33.1   43.0 23rd 15.3   6.5 6th 9.6
Hillston Airport 32.4 +0.9 41.0 24th 16.9 +0.5 9.5 6th 9.0 29.9 low 30%
Offshore Islands (district 200)
Lord Howe Island Aero 24.3 +0.3 27.4 29th 19.6 +0.4 15.7 25th 22.4 103.7 lowest 22%
Norfolk Island Aero 23.5 +0.1 25.8 30th 18.8 +1.0 14.8 2nd 73.6 85.9 average 86%

Notes

As of December 2012, temperature averages are derived from the new ACORN-SAT high-quality dataset, which has monthly temperature data back to 1910. Some inconsistency will be apparent with monthly summaries prior to December 2012; historical climate data based on this dataset is available here.

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 9 am on Wednesday 2 January 2013. 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 20 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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