Wednesday, 1 April 2009 - Monthly Climate Summary for Victoria - Product code IDCKGC26R0

Victoria during March 2009
Weather conditions close to normal

Summary

After several very hot and dry summer months, weather conditions returned to normal during March. Daytime temperatures were mostly near to, or slightly above, the long-term averages, Melbourne's mean maximum being 24.3 deg C (0.5 deg C above normal) whilst overnight, temperatures were mostly near to, or slightly below, the long-term averages, although Melbourne's mean minimum was 14.5 deg C (1.3 deg C above normal, the above normal reading arising from the "heat island" effect of the city's roads and buildings).

By contrast, away from the influence of urbanisation, Melbourne Airport's mean minimum was a cooler 12.9 deg C (only 0.3 deg C above normal).

Rainfall totals were also close to the long-term averages, Melbourne's total for the month was 47.6 mm (normal 50.2 mm). The change in the weather pattern may be attributed to the return of significant cold fronts. Some of these were associated with "cold outbreaks" during the month, which were associated with some very light early snowfalls on the highest peaks of the Victorian alps, and followed by some light frosts over the lowlands.

Following the clearing of skies after the passage of a major cold front during the 3rd and the 4th, which spread very cold air from the southwest over Victoria, several places in the Victorian alps experienced their coldest weather for the month during the night of the 5th/6th. For example, Mt Hotham recorded −2.9 deg C, Mt Buller recorded −1.8 deg C, Falls Creek recorded −1.6 deg C, Dinner Plain recorded −0.6 deg C, and Mt Baw Baw recorded 0 deg C.  

Over the lowlands, light frosts were reported at several places late in the month, as the approach of an anticyclone cleared the skies, thereby allowing maximum radiational cooling. Temperatures fell to 2.2 deg C at Casterton, Ballarat, and Westmere during the night of 27th/28th.

An anticyclone parked itself over the Tasman Sea between the 18th and 21st, blocking the progress of approaching fronts. This culminated in the month's hottest day on the 21st, when Hopetoun recorded the State's highest temperature of 38.5 deg C, whilst Mildura recorded 37.7 deg C.

An archive of previous monthly summaries for Victoria is also available, as are summaries for other states and many other climate summaries and diagnostics.

Seasonal Climate Outlook

The outlook for April-June rainfall may be found at http://www.bom.gov.au/climate/ahead/rain.seaus.shtml

The outlook for April-June temperatures may be found at http://www.bom.gov.au/climate/ahead/temp.seaus.shtml

Long-Term Climate Averages

Long term climate averages may be found at http://www.bom.gov.au/climate/averages/

Further information

Dr Harvey Stern
Climate Meteorologist
Victoria Climate Services Centre
Bureau of Meteorology
Phone (03) 9669 4956
Email climate.vic@bom.gov.au

Records


Nil Records


Summaries

This table is very wide and may not fit if printed.

Summary statistics for 1 March to 31 March 2009
Maximum temperatures
for 1 March to 31 March
(°C)
Minimum temperatures
for 1 March to 31 March
(°C)
Rainfall
for 1 March to 31 March
(millimetres)
Mean for
1 March to 31 March
2009
Diff
from
average
Highest for
1 March to 31 March
2009
Mean for
1 March to 31 March
2009
Diff
from
average
Lowest for
1 March to 31 March
2009
Total for
1 March to 31 March
2009
Average
for
1 March to 31 March
Rank of
1 March to 31 March
2009
Fraction of
1 March to 31 March
average
North Mallee (district 76)
Mildura Airport 28.6 +0.2 37.7 21st 13.8 0.0 8.1 18th 23.4 18.0 high 130%
Ouyen 28.6 +0.1 37.5 21st 12.7 −0.3 8.0 18th 6.9 19.5 average 35%
Walpeup Research 28.4 +0.4 37.5 21st 12.7 −0.5 8.3 15th 6.6 21.0 average 31%
South Mallee (district 77)
Hopetoun Airport 28.3   38.5 21st 11.6   4.5 27th 16.0
Swan Hill Aerodrome 28.7 0.0 37.2 21st 12.6 +0.2 7.0 28th 15.0 10.3 high 146%
North Wimmera (district 78)
Nhill Aerodrome 27.2   37.6 21st 10.6   5.5 27th 9.0
Warracknabeal Museum 27.3 +0.2 37.0 21st 11.6 −0.3 5.8 27th 18.4 20.0 average 92%
South Wimmera (district 79)
Edenhope Airport 25.3   36.3 21st 9.7   4.1 28th 24.6
Grampians 16.5   26.5 21st 7.3   2.5 15th 62.2
Horsham Aerodrome 26.9   37.5 21st 9.6 −0.1 3.3 27th 11.0
Horsham Polkemmet Rd 26.9 +0.3 37.1 21st 9.6 −1.6 3.6 28th 13.4 23.7 average 57%
Kanagulk 25.5   36.2 21st 10.1   4.0 28th 18.0
Longerenong 26.7 +0.3 37.2 21st 10.5 −0.8 1.6 27th 12.8 23.4 average 55%
Pyrenees 19.8   30.0 21st 9.8   5.0 4th 45.2
Stawell Aerodrome 25.2 −0.2 35.6 21st 11.3 +0.2 5.3 28th 22.0 14.5 high 152%
Lower North (district 80)
Charlton 27.5   36.3 21st 12.1   7.1 29th 14.0
Echuca Aerodrome 27.9 +0.5 35.9 21st 12.2 −0.4 7.0 18th 16.6 30.1 average 55%
Kerang 28.5 +0.7 36.8 21st 12.3 −0.9 8.0 18th 9.2 26.7 average 34%
Kyabram DPI 27.3 +0.8 35.7 21st 12.3 0.0 6.4 18th 8.2 25.4 low 32%
Upper North (district 81)
Bendigo Airport 26.4 +0.5 34.9 21st 11.5 +0.2 4.9 28th 26.8 21.5 average 125%
Shepparton Airport 27.3 −0.6 34.5 21st 12.0 +0.2 6.8 18th 21.0
Tatura Inst Sustainable Ag 26.7 +0.4 34.4 21st 11.7 0.0 5.0 29th 16.6 32.3 average 51%
Yarrawonga 28.4 +0.5 34.2 21st 12.8 +0.6 7.0 18th 16.4 21.4 average 77%
Lower Northeast (district 82)
Beechworth Woolshed 27.3 +0.6 32.5 21st 10.2 +0.5 0.9 6th 25.6 40.6 average 63%
Benalla Airport 27.6   34.1 21st 11.5   5.3 16th 17.6
Corryong Airport 28.5   33.0 23rd 9.8   3.5 7th 30.9
Dartmouth Reservoir 27.1 +1.4 31.8 20th 10.4 −0.5 4.4 17th 27.4 58.5 low 47%
Hunters Hill 22.5 +0.5 27.5 20th 12.0 +0.6 4.2 6th 39.2
Rutherglen Research 28.0 +0.8 33.6 21st 11.4 +0.7 5.8 6th 19.2 37.5 average 51%
Strathbogie 23.5 −0.5 29.9 21st 9.0 +0.1 3.4 16th 56.4 52.9 average 107%
Wangaratta Aero 28.0 +0.3 33.1 21st 10.6 +0.2 4.4 7th 22.2 31.5 average 70%
Upper Northeast (district 83)
Dinner Plain 20.3   24.8 20th 6.0   −0.6 17th 29.2
Falls Creek 14.9 +0.6 19.9 29th 6.3 +0.1 −1.8 6th 71.4
Mount Buller 14.5 −0.4 19.9 9th 6.9 0.0 −1.6 6th 92.0 90.5 average 102%
Mount Hotham 13.2 0.0 18.0 1st 5.8 −0.1 −2.9 6th 116.8
Omeo 24.6   29.8 21st 8.9   3.3 28th 35.2
Omeo Comparison 24.6 +2.0 30.2 1st 8.7 +0.9 3.0 8th 35.0 52.7 average 66%
East Gippsland (district 84)
Combienbar AWS 23.6 +1.8 32.7 21st 12.1 +0.5 6.4 5th 18.4
Gabo Island Lighthouse 21.5 +0.5 25.9 20th 15.6 0.0 10.7 16th 15.2 72.8 low 21%
Gelantipy 22.3 +1.4 28.1 20th 9.8 +0.1 4.8 28th 53.4
Lakes Entrance 22.7   34.3 21st 13.0   8.8 15th 36.2
Mallacoota 22.6 +0.4 31.4 21st 13.7 −0.2 8.4 16th 41.0 72.5 average 57%
Mount Nowa Nowa 23.6 +1.1 34.4 21st 12.7 0.0 8.4 5th 27.2
Orbost 25.2   35.1 21st 12.9   7.1 28th 21.2
Orbost 25.1 +1.2 35.0 21st 12.3 +0.1 6.4 28th 22.4 66.0 low 34%
Point Hicks 22.7 +0.7 34.0 21st 15.0 −0.1 7.9 5th 30.5 63.9 low 48%
West Gippsland (district 85)
Bairnsdale Airport 24.7 +0.9 35.3 21st 11.1 +0.1 4.8 28th 12.6 39.9 low 32%
East Sale Airport 24.7 +1.2 35.4 21st 10.9 −0.5 5.0 28th 19.8 48.8 low 41%
Morwell 25.1 +0.7 35.5 21st 11.7 +0.6 5.0 28th 30.4 45.1 average 67%
Mount Baw Baw 14.5 +0.3 21.3 21st 6.3 0.0 0.0 6th 94.0
Mount Moornapa 23.1 +0.9 33.0 21st 11.7 0.0 7.8 28th not available
Noojee 23.5 +0.7 32.2 21st 9.8 +0.2 4.8 29th 70.4 68.8 average 102%
Pound Creek 23.2   34.9 21st 11.7   2.8 29th 67.0
Wilsons Promontory Lighthouse 19.5 +0.1 28.7 21st 14.4 −0.2 10.6 16th 113.4 68.9 high 165%
Yarram Airport 23.5   35.7 21st 11.3   4.3 29th 24.4
East Central (district 86)
Bundoora 24.1 −0.1 34.0 21st 12.9 +0.5 7.0 28th 57.0 43.0 high 133%
Cerberus 22.8 −0.1 34.6 21st 12.6 +0.4 5.0 29th 52.6 46.1 average 114%
Coldstream 25.1 −0.3 33.5 21st 10.3 +1.1 3.0 28th 78.0
Cranbourne Botanic Gardens 23.8 +0.5 34.5 21st 12.5 +0.2 8.5 28th 52.8 40.2 average 131%
Essendon Airport 24.1 +0.2 34.8 21st 13.1 +0.8 7.1 29th 35.4 39.3 average 90%
Ferny Creek 20.2 +0.3 29.9 21st 10.6 −0.4 6.6 15th 96.0 77.4 average 124%
Frankston AWS 22.5 +0.2 32.4 21st 14.3 −0.1 10.5 9th
Melbourne Airport 24.2 +0.2 34.7 21st 12.9 +0.3 8.4 28th 34.4 36.0 average 96%
Melbourne Regional Office 24.3 +0.5 34.6 21st 14.5 +1.3 9.7 9th 47.6 50.2 average 95%
Moorabbin Airport 23.7 0.0 34.9 21st 13.1 +0.2 8.0 29th 40.6 45.0 average 90%
Rhyll 22.2 −0.1 31.3 21st 14.4 0.0 11.5 16th 50.4
Scoresby Research Institute 24.3 +0.2 33.4 21st 12.3 −0.3 6.6 9th 65.2 55.5 average 117%
Viewbank 24.5 −0.7 34.8 21st 12.4 0.0 6.6 28th 68.2 38.7 high 176%
Wallan 21.9 +0.7 30.4 21st 10.7 0.0 6.8 15th 37.4 31.3 average 119%
Wonthaggi 22.8 +0.2 33.5 21st 12.4 +0.4 8.8 31st 83.8 61.5 high 136%
West Central (district 87)
Avalon Airport 23.8 −0.3 37.0 21st 12.4 +0.2 7.0 9th 32.8 27.6 average 119%
Grovedale 22.9 −0.1 36.3 21st 11.7 −0.1 6.1 28th 35.2 32.1 average 110%
Laverton RAAF 23.6 0.0 35.2 21st 12.7 +0.3 6.5 29th 38.6 35.0 average 110%
Sheoaks 23.1 +0.3 34.4 21st 10.9 +0.1 4.8 27th 27.4
North Central (district 88)
Castlemaine Prison 24.8 0.0 33.3 21st 10.9 0.0 3.8 27th 25.8 32.2 average 80%
Eildon Fire Tower 22.9 −0.8 29.9 21st 11.4 0.0 7.1 5th 67.0
Lake Eildon 26.2 +0.5 32.9 21st 10.4 −0.2 5.4 18th 46.8 51.7 average 91%
Mangalore Airport 26.3 +0.2 34.2 21st 12.4 +0.1 7.1 16th 33.0 30.7 average 107%
Maryborough 25.5 +0.1 35.0 21st 11.2 −0.4 6.2 18th 32.9 30.1 average 109%
Redesdale 25.6 +0.4 33.6 21st 11.2 +0.7 4.7 18th 28.8 32.3 average 89%
Western Plains (district 89)
Ararat Prison 24.0 +0.2 34.2 21st 9.5 +0.1 3.0 29th 24.4 30.8 average 79%
Ballarat Aerodrome 22.9 +0.4 33.1 21st 9.9 0.0 2.2 28th 40.2 42.1 average 95%
Westmere 24.0   35.5 21st 9.7   2.2 28th 29.6
West Coast (district 90)
Aireys Inlet 21.3 0.0 35.8 21st 12.9 −0.4 8.8 28th 27.6 28.6 average 97%
Cape Nelson Lighthouse 19.8 −0.3 34.1 21st 13.5 −0.4 8.4 28th 49.0
Cape Otway Lighthouse 19.6 −0.3 32.6 21st 13.1 −0.1 8.8 28th 71.0 56.3 high 126%
Casterton 24.3   35.5 21st 9.8   2.2 28th 36.4
Casterton Showgrounds 24.5 −0.1 35.0 21st 9.7 −1.1 2.8 29th 35.2 36.1 average 98%
Colac 22.3   35.1 21st 11.3   8.4 15th 31.0
Dartmoor 22.9   34.6 21st 8.8   1.5 29th 54.0
Hamilton Airport 24.0 −0.2 35.2 21st 10.0 −0.1 4.1 28th 29.0 33.2 average 87%
Mortlake Racecourse 23.6 −0.1 35.8 21st 9.7 +0.1 2.0 9th 42.6
Port Fairy AWS 21.4 0.0 36.6 21st 12.0 −0.9 6.3 28th 39.0
Portland 20.4 −0.6 33.6 21st 10.9 −0.8 3.2 28th 56.6 45.8 high 124%
Warrnambool Airport NDB 22.7 −0.3 35.4 21st 9.9 −0.5 3.1 29th 51.6 46.2 average 112%
Weeaproinah 17.9 −0.4 30.3 21st 9.7 −0.8 7.0 4th 135.2 111.5 high 121%

Notes

This statement has been prepared based on information available at 11 am on Wednesday 1 April 2009. 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

Dr Harvey Stern
Climate Meteorologist
Victoria Climate Services Centre
Bureau of Meteorology
Phone (03) 9669 4956
Email climate.vic@bom.gov.au