NSW in July 2011: Wettest July since 1950s on Central Coast

  • Below average rainfall for NSW and MDB.
  • Heavy rain on south and central coasts.
  • Close to average temperatures in NSW.

Rainfall

NSW recorded an average rainfall of 23.0 mm during July, below the historical average of 39.4 mm. Rainfall was generally above average on the south and central coasts, predominantly due to a coastal ECL during the month, with well above average rainfall in coastal Sydney and the Central Coast. In comparison, totals were average to below average west of the divide, particularly in the Northern Tablelands. The MDB also recorded 23.7 mm during July, below the historical average of 39.7 mm.

The most significant rain event was between the 20th and 23rd associated with an East Coast Low off the coast, which brought several days of heavy rainfall to the south and central coasts, particularly in Sydney. Daily falls reached 130 mm at Terry Hills in Sydney on the 22nd, with four-day totals as high as 296 mm at Castle Cove in Sydney and 248 mm at Newcastle. This resulted in record-breaking July totals at several stations, and the wettest July since at least 1952 at several coastal stations including Sydney and Gosford.

Moderate rain was also recorded in the Snowy Mountains between the 4th and 7th, with totals of 108 mm at Thredbo, associated with strong southerly winds. Much of this fell as snow, with snow levels at Spencers Creek increasing from 64 cm to 159 cm during the first week of July, the highest levels for early July since 1990. For more information on snow levels see Snowy Hydro.

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

Temperature

Maximum temperatures in NSW were above average during July, at 15.9 °C compared to the historical average of 15.3 °C, the 13th consecutive July with above average maximum temperatures in NSW. Temperatures were generally within a degree of average across the state, with generally above average temperatures in the west but cooler conditions along the coast where rainfall was high.

Minimum temperatures were 0.1 °C below average during July at 3.4 °C. Temperatures were generally within 1 °C of average during the month, with warmer conditions in the south and east of the state and cooler conditions in the north west, particulaly twoards the northern border. Mean temperatures were consequently average during July.

Some sites had their lowest July temperature on record.

See a map of maximum temperature anomalies. See a map of minimum temperature anomalies.

Other phenomena

Strong winds were recorded in the Southern and Central Tablelands between the 5th and 10th of the month, reaching 139 km/hr at Mt Boyce on the 5th and 146 km/hr at Thredbo on the 10th. The winds were associated with blizzard conditions in the Snowy Mountains and moderate damage in the Tablelands, including damage to property from falling trees in the Blue Mountains and interruptions to power and train lines. 2500 Requests for Assistance were received by the SES during this event.

An East Coast Low between the 20th and 23rd had maximum wind gusts of up to 118 km/hr at Wattamolla on the 20th and four-day rainfall totals exceeding 200 mm across the Sydney and Central Coast region, associated with minor damage and 1200 Requests for Assistance to the SES.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in July 2011
Hottest day 26.8 °C at Tibooburra Post Office on the 30th
Warmest days on average 20.7 °C at Grafton Olympic Pool
20.7 °C at Murwillumbah (Bray Park)
Coolest days on average -0.2 °C at Thredbo AWS
Coldest day -3.5 °C at Thredbo AWS on the 9th
Coldest night -16.0 °C at Charlotte Pass (Kosciusko Chalet) on the 27th
Coolest nights on average -5.0 °C at Thredbo AWS
Warmest nights on average 13.8 °C at Lord Howe Island Aero
Warmest night 17.1 °C at Lord Howe Island Aero on the 14th
Warmest on average overall 16.2 °C at Lord Howe Island Aero
16.2 °C at Norfolk Island Aero
Coolest on average overall -2.6 °C at Thredbo AWS
Wettest overall 319.5 mm at Castle Cove (Rosebridge Ave)
Wettest day 130.4 mm at Terrey Hills AWS on the 22nd
Highest wind gust 146 km/h at Thredbo AWS on the 10th


Record highest total July rainfall
Total rainfall
for July 2011 (mm)
Previous wettest
for July
Years of
record
Average for
July
Castle Cove (Rosebridge Ave) 319.5 195.1 in 1976 52 73.8
Mona Vale Golf Club 287.6 162.6 in 1984 42 70.1
Avalon Beach (Avalon (Palmgrove Rd)) 196.2 173.0 in 1997 33 75.5
Peakhurst Golf Club 164.0 158.6 in 1975 33 48.3
Gosford North (Glennie St) 245.5 201.5 in 1988 31 84.1




Record lowest July temperature
Lowest temperature
in July 2011 (°C)
Previous coolest
for July
Years of
record
Average for
July
Glen Innes Ag Research Stn -7.5 on the 12th -7.2 on the 17th in 1970 38 0.7



Summary statistics for July 2011
Maximum temperatures
for July
(°C)
Minimum temperatures
for July
(°C)
Rainfall
for July
(millimetres)
Mean for
July
2011
Diff
from
average
Highest for
July
2011
Mean for
July
2011
Diff
from
average
Lowest for
July
2011
Total for
July
2011
Average
for
July
Rank of
July
2011
Fraction of
July
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 17.2   23.7 31st 3.5   -1.8 8th 6.8
Tibooburra Airport 18.2   25.8 30th 5.5   1.2 8th 6.4
Tibooburra Post Office 18.6 +0.8 26.8 30th 5.7 +0.3 0.4 9th 6.6 16.6 average 40%
White Cliffs AWS 17.4   25.1 31st 4.7   -0.9 9th 13.4
White Cliffs Post Office 17.7 +0.5 25.5 30th 3.5 -0.6 -2.7 12th 15.6 18.1 average 86%
Wilcannia (Reid St) 17.6 +0.5 24.8 30th 3.3 -0.9 -3.7 12th 13.4 18.2 average 74%
Wilcannia Aerodrome AWS 17.5   24.6 30th 3.1   -3.0 12th 13.6
Western (Lower Darling) (district 47)
Broken Hill (Patton Street) 15.7 +0.6 21.9 31st 5.8 +0.4 1.4 22nd 15.6 18.9 average 83%
Broken Hill Airport AWS 15.7 +0.4 22.0 31st 4.2 -0.6 -2.0 12th 12.6 18.2 average 69%
Lake Victoria Storage 16.1 +0.8 20.4 30th 4.4 -0.9 -1.9 23rd 12.3 24.8 low 50%
Menindee Post Office 16.4 -0.6 23.2 2nd 4.6 +0.6 0.2 12th 15.8 18.2 average 87%
Pooncarie Mail Agency 16.5   23.4 31st 4.3   -1.0 12th 11.6 22.4 average 52%
Western (Upper Darling) (district 48)
Bourke Airport AWS 18.4   25.9 31st 3.5   -2.8 12th 17.8
Brewarrina Hospital 18.7 +0.6 25.0 31st 4.4 0.0 -1.0 12th 18.6 29.0 average 64%
Cobar Airport AWS 16.0   23.1 31st 2.8   -4.2 12th 10.4
Cobar MO 16.0 +0.2 23.0 31st 4.6 -0.4 -1.1 12th 14.4 28.9 average 50%
Collarenebri (Albert St) 18.5 0.0 24.1 4th 3.4 -0.7 -2.6 12th 17.0 34.9 average 49%
Lightning Ridge Visitors Information Cen 18.6   24.2 31st 3.8   -1.8 12th 18.0
Wanaaring Post Office 19.2   26.7 31st 3.1   -1.6 29th 14.7 17.8 average 83%
Western (Southwest Plains) (district 49)
Balranald (RSL) 15.8 +0.1 22.2 31st 4.0 +0.5 -1.0 8th 21.2 26.4 average 80%
Ivanhoe Aerodrome AWS 16.8   23.5 30th 4.2   -2.2 15th 12.4
Ivanhoe Post Office 17.1 +0.6 24.0 31st 3.6 0.0 -3.0 12th 14.8 22.9 average 65%
Central Western Plains (South) (district 50)
Condobolin Ag Research Stn 15.3 +0.4 20.8 3rd 2.4 -0.4 -3.8 15th 13.4 36.3 low 37%
Condobolin Airport AWS 15.9   21.8 31st 2.4   -4.2 15th 13.4
Peak Hill Post Office 16.0 +0.8 20.4 30th 5.1 +0.3 -1.5 8th 14.5 44.5 low 33%
West Wyalong Airport AWS 15.0   20.4 3rd 2.2   -3.1 8th 19.6
Central Western Plains (North) (district 51)
Coonamble Airport AWS 17.5   22.6 31st 2.5   -3.5 9th 8.8
Nyngan Airport 17.2 +0.8 22.0 31st 3.7 0.0 -0.5 8th 7.8 29.3 low 27%
Trangie Research Station AWS 16.5 +1.2 21.2 3rd 2.5 -0.7 -3.8 8th 2.6 34.5 v low 8%
Northwest Plains (West) (district 52)
Mungindi Post Office 19.2 +0.4 25.6 4th 3.9 -0.8 -1.0 9th 17.7 33.3 average 53%
Walgett Airport AWS 18.3   23.7 31st 2.3   -3.5 28th 14.2
Northwest Plains (East) (district 53)
Moree Aero 17.5   23.4 4th 3.2   -3.2 12th 6.8
Northwest Slopes (North) (district 54)
Barraba Post Office 16.3 +0.3 20.1 31st -0.9 -1.1 -7.0 9th 5.8 43.8 low 13%
Narrabri Airport AWS 17.5   21.2 31st 2.7   -4.4 9th 0.6
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 17.1   20.7 31st 0.6   -5.5 12th 4.0
Gunnedah Pool 16.9 0.0 20.5 29th 3.4 +0.4 -1.8 12th 5.4 42.4 v low 13%
Gunnedah Resource Centre 16.7 +0.6 20.2 31st 4.9 +0.2 -0.9 12th 4.0 42.7 v low 9%
Quirindi Post Office 15.8 -0.1 20.0 31st 1.3 -0.3 -4.7 9th 6.0 48.2 v low 12%
Tamworth Airport AWS 16.2   19.4 31st 0.7   -6.6 9th 1.8
Woolbrook (Danglemah Road) 11.8 -0.9 16.0 2nd -1.6 -0.4 -9.5 9th 14.6 52.6 low 28%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 12.1   15.4 30th -0.6   -7.7 12th 13.6
Armidale Airport AWS 11.2   14.5 30th 0.6   -4.4 12th 6.0
Glen Innes Ag Research Stn 12.1 -0.4 15.0 31st 0.3 -0.4 -7.5 12th 10.6 55.7 v low 19%
Glen Innes Airport AWS 12.4   15.7 12th -1.6   -11.1 12th 9.6
Glen Innes Post Office 12.7 0.0 16.0 29th 0.8 +0.2 -6.2 12th 10.6 53.9 v low 20%
Guyra Hospital 9.8 -0.6 13.7 12th 0.0 -0.7 -4.6 12th 16.4 58.0 v low 28%
Inverell (Raglan St) 15.9   19.5 1st -1.3   -7.2 10th 5.0
Inverell Research Centre 15.0 -0.1 17.8 4th 2.5 -1.1 -3.7 10th 4.8 48.2 v low 10%
Tenterfield (Federation Park) 14.2 -0.2 17.5 12th -0.9 -1.9 -7.5 12th 30.4 54.3 average 56%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 16.2 -0.1 20.0 4th 5.6 -1.6 0.3 10th 28.0 46.1 average 61%
Upper North Coast (district 58)
Ballina Airport AWS 19.9   23.2 26th 7.7   2.1 12th 71.8
Byron Bay (Cape Byron AWS) 18.4   21.2 26th 11.6   9.0 10th 49.4
Casino Airport 20.3 -0.8 23.0 26th 6.7 +0.1 3.0 8th 16.4 56.6 low 29%
Casino Airport AWS 20.1   23.1 4th 6.5   2.4 8th 16.0
Evans Head RAAF Bombing Range AWS 19.3   23.9 26th 9.6   4.4 9th 56.8
Grafton Airport AWS 19.9   22.7 20th 4.4   -1.8 9th 13.6
Grafton Olympic Pool 20.7 +0.2 23.6 21st 6.0 -0.3 -0.3 9th 6.5 39.2 low 17%
Grafton Research Stn 20.2   23.0 4th 7.0   -1.1 9th 6.2 53.4 low 12%
Lismore (Richmond Hill) 19.9   23.0 26th 8.6   3.7 13th 25.8
Lismore Airport AWS 20.3   23.3 26th 5.9   -0.8 10th 24.0
Murwillumbah (Bray Park) 20.7 -0.3 23.4 4th 7.3 -1.3 0.6 10th 31.4 65.0 average 48%
Yamba Pilot Station 19.7 +0.7 23.3 26th 9.3 -0.4 5.2 10th 51.8 102.5 average 51%
Lower North Coast (district 59)
Coffs Harbour MO 18.7 0.0 23.3 4th 7.5 -0.1 0.6 9th 55.6 74.1 average 75%
Dorrigo (Old Coramba Rd) 13.9   19.0 4th 3.6   -2.3 9th 37.2
Kempsey (Wide Street) 19.3 -0.4 23.3 4th 6.3 +0.6 1.8 9th 30.6 66.2 average 46%
Kempsey Airport AWS 19.3   23.0 4th 4.9   -0.9 9th 18.2
South West Rocks (Smoky Cape Lighthouse) 18.8 +0.1 21.0 25th 10.7 -0.5 7.2 10th 92.0 78.7 high 117%
Manning (district 60)
Forster - Tuncurry Marine Rescue 17.5   22.5 4th 8.2   4.2 9th 183.2 87.5 high 209%
Port Macquarie Airport AWS 18.2   23.0 4th 6.0   -1.0 12th 109.4
Taree Airport AWS 17.9   23.0 4th 6.3   0.0 9th 99.2
Yarras (Mount Seaview) 18.2 -0.3 23.4 4th 6.0 +0.6 0.2 9th 59.8 62.7 average 95%
Hunter (district 61)
Cessnock (Nulkaba) 17.9 +0.1 21.9 31st 5.0 +0.4 -0.6 30th 51.6 32.6 high 158%
Cessnock Airport AWS 16.5 -0.8 20.5 31st 5.1   -1.4 30th 46.2 30.4 high 152%
Cooranbong (Lake Macquarie AWS) 17.4   21.9 31st 4.7   -0.1 30th 147.2
Gosford (Narara Research Station) AWS 17.1 -0.4 21.4 31st     1.5 30th 240.6 80.7 v high 298%
Maitland Visitors Centre 17.5   21.9 4th 6.3   0.5 30th 86.7
Mangrove Mountain AWS 14.7   19.8 31st 5.7   1.3 8th 176.2
Merriwa (Roscommon) 16.0   20.6 31st 2.1   -4.2 30th 3.6 35.3 v low 10%
Murrurundi Gap AWS 11.9   16.1 31st 3.7   -0.8 9th 19.6
Murrurundi Post Office 14.6 -0.5 18.8 31st 1.3 -0.7 -4.2 12th 18.0 63.6 low 28%
Nelson Bay (Nelson Head) 16.9 -0.5 22.5 4th 10.4 +1.8 8.5 8th 281.2 141.8 v high 198%
Newcastle Nobbys Signal Station AWS 17.4 +0.7 22.2 31st 9.4 +1.0 6.8 8th 134.2 94.7 high 142%
Newcastle University 17.4   21.6 4th 7.3   4.2 30th 156.5
Norah Head AWS 16.9   21.1 4th 9.2   5.6 9th 256.6
Paterson (Tocal AWS) 16.9 -0.4 22.1 4th 7.3 +1.2 2.3 29th 81.4 40.8 high 200%
Peats Ridge (Waratah Road) 15.0 -0.8 20.2 31st 6.5 +0.5 2.9 9th 162.4 67.9 v high 239%
Scone Airport AWS 15.9   20.5 31st 3.2   -2.1 12th 7.8
Singleton STP 16.6   20.9 31st 3.6   -1.9 30th 26.2
Williamtown RAAF 17.3 +0.3 22.2 4th 7.4 +1.0 2.0 30th 149.6 73.5 v high 204%
Central Tablelands (North) (district 62)
Gulgong Post Office 15.2 +0.5 19.9 31st 2.0 -0.6 -2.1 27th 8.7 49.2 low 18%
Mudgee Airport AWS 14.3   18.5 31st 0.7   -5.6 30th 6.8
Nullo Mountain AWS 8.3   12.9 31st 1.8   -3.0 8th 18.4
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 12.1 +0.9 15.8 29th 0.6 0.0 -6.1 29th 21.0 48.6 low 43%
Bathurst Airport AWS 11.7   15.5 29th 0.4   -5.5 15th 23.0
Katoomba (Murri St) 9.6 +0.3 15.4 29th 2.9 +0.4 -2.1 15th 48.4 84.3 average 57%
Lithgow (Cooerwull) 9.9   14.4 30th 0.7   -5.6 29th 24.6 62.0 low 40%
Mount Boyce AWS 8.3   14.1 29th 2.2   -1.8 8th 36.8
Oberon (Springbank) 8.4 -0.2 13.5 29th -0.9 -0.5 -4.8 24th 47.0 70.8 average 66%
Orange Agricultural Institute 9.5 +0.1 13.4 29th 1.5 0.0 -2.8 24th 37.4 90.3 low 41%
Orange Airport AWS 9.0   13.0 29th 0.5   -5.3 29th 38.6
Springwood (Valley Heights) 15.5   18.5 29th 6.3   0.9 9th 26.0 56.8 average 46%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 15.1 +0.3 19.2 31st -1.0 -1.1 -5.5 9th 9.0 55.1 v low 16%
Coonabarabran Airport AWS 13.9   18.5 31st 4.7   0.9 9th 2.6
Dunedoo Post Office 15.6 +0.3 21.0 31st 1.8 -0.2 -4.3 12th 4.7 46.5 v low 10%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 14.3   19.8 3rd 1.8   -3.8 8th 13.8
Dubbo Airport AWS 15.7   20.5 31st 2.0   -3.5 12th 8.4
Forbes Airport AWS 15.5   20.7 3rd 1.9   -4.6 8th 13.4
Parkes (Macarthur Street) 15.2 +1.2 20.0 29th 3.8 -0.2 -2.5 15th 22.6 49.1 low 46%
Parkes Airport AWS 13.9   18.9 3rd 1.9   -4.7 8th 21.2 47.6 low 45%
Wellington (Agrowplow) 15.5 +0.3 19.5 3rd 1.9 -0.3 -4.0 8th 12.8 49.0 low 26%
Metropolitan (East) (district 66)
Bankstown Airport AWS 16.7 -0.5 20.1 4th 5.8 +0.7 0.6 8th 111.8 46.1 v high 243%
Canterbury Racecourse AWS 16.8   20.6 31st 6.1   0.9 8th 179.2
Holsworthy Control Range 16.6   20.4 4th 5.0   -1.8 8th 95.2
Parramatta North (Masons Drive) 16.7 -0.6 20.7 31st 6.3 +0.1 1.0 9th 132.1 47.1 v high 280%
Riverview Observatory 16.8 +0.1 20.2 31st 6.6 +0.2 2.9 8th 267.6 85.9 v high 312%
Sydney (Observatory Hill) 17.4 +1.1 21.4 31st 8.6 +0.6 5.5 8th 282.2 98.6 v high 286%
Sydney Airport AMO 17.2 +0.2 21.2 4th 8.6 +1.5 5.4 15th 228.0 71.0 v high 321%
Sydney Harbour (Wedding Cake West) 16.6   19.7 4th 9.9   7.8 15th
Sydney Olympic Park (Sydney Olympic Pk A 17.2   21.4 31st 7.7   4.1 8th 172.0
Terrey Hills AWS 15.3   19.6 31st 7.1   1.9 9th 210.6
Metropolitan (West) (district 67)
Badgerys Creek AWS 16.8   20.6 4th 4.2   -1.7 12th 47.0
Horsley Park Equestrian Centre AWS 16.5   20.0 4th 5.5   0.1 8th 76.2
Liverpool (Michael Wenden Centre) 17.2   21.2 4th 4.2   -1.5 8th 72.1
Penrith Lakes AWS 17.3   21.2 4th 5.5   -0.3 9th 27.2
Prospect Reservoir 15.9 -0.9 20.7 4th 6.1 0.0 0.8 8th 85.2 57.3 high 149%
Richmond RAAF 17.0   20.4 30th 4.0   -3.1 9th 28.8
Illawarra (district 68)
Bellambi AWS 16.6   20.3 4th 10.0   7.2 24th 223.0
Bowral (Parry Drive) 10.8 -0.8 15.6 29th     -0.6 15th 71.0 46.8 high 152%
Camden Airport AWS 16.9 -0.3 20.4 29th 4.0 +1.0 -2.1 8th 46.4 39.2 average 118%
Campbelltown (Mount Annan) 16.9   21.3 4th 4.4   -2.0 8th 62.2
Jervis Bay (Point Perpendicular AWS) 15.3   19.1 3rd 9.6   6.5 8th 198.4
Kiama (Bombo Headland) 16.4   20.8 4th 10.0   7.1 8th 187.4
Moss Vale AWS 10.9   15.6 29th 2.1   -3.8 15th 88.8
Nowra RAN Air Station AWS 15.6   20.3 30th 7.0   2.2 15th 142.4
South Coast (district 69)
Batemans Bay (Catalina Country Club) 16.3   20.2 3rd 3.8   -2.3 8th 125.0 45.0 high 278%
Bega AWS 16.3   20.7 3rd 1.8   -3.5 9th 68.8
Braidwood Racecourse AWS 11.6   16.2 29th -0.7   -8.0 15th 44.2 35.2 average 126%
Green Cape AWS 15.4   19.5 31st 8.6   7.0 8th 10.6
Merimbula Airport AWS 16.4   20.7 31st 3.8   -0.8 10th 59.2
Montague Island Lighthouse 15.4 0.0 19.7 4th 10.0 +0.1 7.0 8th 94.2 52.3 high 180%
Moruya Airport AWS 16.9   20.8 3rd 3.6   -3.9 8th 92.8
Moruya Heads Pilot Station 16.4 +0.2 20.3 3rd 6.2 +0.3 2.0 8th 105.2 55.9 high 188%
Narooma Vmr 16.2 +0.2 20.6 4th 6.3 -0.4 2.0 8th 96.2 50.1 high 192%
Nerriga Composite 11.8 0.0 16.9 3rd 0.0 -0.2 -7.0 8th 91.9 61.9 high 148%
Ulladulla AWS 15.8   20.6 30th 8.7   3.7 8th 155.6
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 11.9 +0.9 17.0 29th -1.2 -0.1 -6.7 30th 42.2 46.4 average 91%
Bombala AWS 10.2   14.6 3rd -0.6   -6.8 1st 54.0
Canberra Airport 12.3   16.6 3rd -0.7   -8.0 29th 25.2
Cooma Airport AWS 10.0   14.8 8th -2.6   -10.8 29th 26.8 30.3 average 88%
Cooma Visitors Centre 11.3 -0.1 15.8 28th -3.4 -0.6 -10.0 8th 21.1 28.9 average 73%
Goulburn Airport AWS 11.2   16.3 3rd -0.3   -7.5 15th 23.8
Goulburn TAFE 10.9 -0.6 16.0 2nd 1.6 +0.1 -3.6 15th 23.6 42.3 low 56%
Mount Ginini AWS 1.5   10.2 1st -2.9   -6.6 15th 95.8
Taralga Post Office 10.0 -0.2 15.4 2nd 0.4 -0.2 -4.5 15th 51.9 67.3 average 77%
Tuggeranong (Isabella Plains) AWS 12.2   15.9 3rd -0.2   -8.2 29th 37.6
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 2.5   10.3 1st -4.4   -10.8 15th 275.2
Thredbo AWS -0.2 -0.1 5.5 1st -5.0 +0.3 -9.6 23rd 46.6 110.7 low 42%
Thredbo Village 4.8 -0.6 10.0 29th -3.5 +0.4 -10.0 15th 186.6 158.5 high 118%
Southwest Slopes (South) (district 72)
Albury Airport AWS 13.0   17.2 21st 3.1   -1.6 15th 70.2
Cabramurra SMHEA AWS 3.1   11.8 1st -1.2   -5.5 15th 22.8
Hume Reservoir 12.8 +0.6 17.3 21st 4.5 +0.6 0.5 15th 71.6 76.5 average 94%
Khancoban AWS 11.2   16.0 20th 1.4   -3.8 29th 91.2
Tumbarumba Post Office 10.8 +0.2 15.5 20th -0.1 +0.1 -6.0 15th 102.4 105.2 average 97%
Wagga Wagga AMO 13.5 +0.8 19.4 3rd 2.9 +0.2 -4.7 8th 34.2 55.0 low 62%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 12.0 +0.4 18.8 30th 2.9 -0.1 -0.5 30th 109.9 102.8 average 107%
Cootamundra Airport 13.0   18.7 3rd 0.7   -4.6 30th 45.2
Grenfell (Manganese Rd) 13.6 +0.7 18.5 3rd 2.4 -0.7 -3.4 15th 16.4 55.8 low 29%
Gundagai (William St) 13.0   19.5 3rd 2.2   -3.1 15th 56.8
Quandialla Post Office 14.7 +0.4 20.0 3rd 3.2 +0.3 -2.8 8th 18.6 44.1 low 42%
Temora Airport 13.9   20.1 3rd 2.2   -3.6 8th 25.4
Wyalong Post Office 14.9 +0.9 19.9 30th 3.1 +0.1 -1.6 29th 14.4 41.8 low 34%
Young Airport 12.8   17.8 3rd 0.3   -6.0 8th 28.0
Riverina (East) (district 74)
Corowa Airport 14.1 +1.1 18.5 20th 3.5 +0.7 -2.0 15th 55.8 54.7 average 102%
Deniliquin Airport AWS 15.0   20.3 30th 3.5   -2.0 8th 29.0
Narrandera Airport 15.1   20.3 31st 3.2   -2.8 8th 19.4 36.9 low 53%
Narrandera Golf Club 15.0 +0.9 20.2 31st 3.0 -0.2 -2.5 8th 22.0 40.7 low 54%
Tocumwal Airport 14.5 +0.6 19.6 30th 4.2 +0.9 -0.9 28th 40.2 42.2 average 95%
Yanco Agricultural Institute 15.0   20.1 31st 4.4   -0.9 8th 29.0 33.5 average 87%
Riverina (West) (district 75)
Griffith Airport AWS 15.6 +1.2 21.9 31st 3.7 +0.2 -2.7 8th 29.8 33.5 average 89%
Hay (Miller Street) 16.1 +1.0 23.4 30th 4.3 +0.8 -1.1 15th 25.4 31.0 average 82%
Hay Airport AWS 16.6   24.1 30th 3.0   -3.0 27th 22.4
Hillston Airport 16.5 +1.6 23.0 30th 2.9 -0.9 -3.0 8th 19.6 31.2 average 63%
Lake Cargelligo Airport 16.2 +0.7 22.2 30th 3.6 +0.2 -2.7 8th 11.0 33.8 low 33%
Offshore Islands (district 200)
Lord Howe Island Aero 18.5 -0.4 20.6 4th 13.8 -0.1 8.3 26th 94.4 138.5 low 68%
Norfolk Island Aero 18.8 +0.5 20.6 20th 13.6 +0.1 10.8 26th 134.0 141.8 average 94%

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 1 August 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 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.

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