Victoria in October 2017: drier and warmer than average

October rainfall was generally average to below average across the State. Both daytime and overnight temperatures were mostly above average with large areas recording very much above average temperatures.

Below average rainfall

  • Several areas in the south of Victoria recorded rainfall in the lowest 10% of October totals, with rainfall averaged across the State 27% below the long-term mean of 63.8 mm
  • The State received about half of the rain it had in October last year which was wetter than average
  • Cold fronts associated with the low pressure troughs brought widespread falls to Victoria on the 9th, 12th, 19th and 29th
  • Daily rainfall totals to 9am on the 20th exceeded 40 mm at some sites in the north-east of the State; the highest daily rainfall total in Victoria during October, 79.4 mm, was recorded at Angleside (Boggy Creek) on the same day
  • The wettest place in Victoria during October was Falls Creek with 183.4 mm

Above average daytime and overnight temperatures

  • Mean maximum and minimum temperatures were above average across Victoria, with large parts of the State recording temperatures very much above the average
  • The statewide maximum temperature for Victoria was 2.02 °C above average, while minimum temperature was 0.77 °C above the long-term October average
  • During a warm spell between the 16th and 18th many sites across the State recorded daily maximum temperatures of above 30 °C; the highest maximum temperature in Victoria, 34.6 °C, was recorded at Ouyen on the 18th
  • There were several warm nights during the month, when approaching cold fronts directed warm northerly airstream across the State; the highest overnight temperatures during the month were recorded on the 18th and 19th, when a number of sites had their warmest October night (highest daily minimum temperature) on record

Further information

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Extremes in October 2017
Hottest day 34.6 °C at Ouyen (Post Office) on the 18th
Warmest days on average 26.8 °C at Mildura Airport
Coolest days on average 9.0 °C at Mount Hotham
Coldest day 1.7 °C at Mount Hotham on the 31st
Coldest night -4.1 °C at Falls Creek on the 31st
Coolest nights on average 2.1 °C at Mount Hotham
Warmest nights on average 11.5 °C at Point Hicks (Lighthouse)
Warmest night 23.1 °C at Moorabbin Airport on the 19th
23.1 °C at Swan Hill Aerodrome on the 19th
Warmest on average overall 18.8 °C at Mildura Airport
Coolest on average overall 5.6 °C at Mount Hotham
Wettest overall 183.4 mm at Falls Creek
Wettest day 79.4 mm at Myrrhee (Boggy Ck at Angleside) on the 20th
Strongest wind gust 122 km/h at Mount Hotham on the 11th

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 highest October daily rainfall
New record
(mm)
Old
record
Years of
record
Yarrawonga 42.2 on the 20th 33.6 on the 7th in 2012 24



Record highest October temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Gelantipy 28.9 on the 18th 28.3 on the 5th in 2015 25 16.5



Record highest October daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Moorabbin Airport 23.1 on the 19th 22.3 on the 13th in 1977 47 9.3
Bendigo Airport 17.7 on the 19th = 17.7 on the 16th in 2015 26 6.6
Port Fairy AWS 18.5 on the 18th 18.1 on the 9th in 1999 26 9.4
Rhyll 17.1 on the 19th = 17.1 on the 20th in 2011 26 10.6
Mount Moornapa 19.1 on the 19th = 19.1 on the 16th in 2015 24 8.1
Cape Nelson Lighthouse 20.2 on the 18th 18.7 on the 24th in 1996 22 10.4
Horsham Aerodrome 17.2 on the 19th 17.0 on the 31st in 2015 21 5.6
Swan Hill Aerodrome 23.1 on the 19th 21.8 on the 30th in 2009 21 7.9



Highest October mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
October
Portland (Cashmore Airport) 9.5 9.8 in 1991 8.3



Summary statistics for October 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
October
2017
Diff
from
average
Highest for
October
2017
Mean for
October
2017
Diff
from
average
Lowest for
October
2017
Total for
October
2017
Average
for
October
Rank of
October
2017
Fraction of
October
average
North Mallee (district 76)
Mildura Airport 26.8 +2.7 34.0 18th 10.9 +1.1 4.7 1st 23.0 28.9 average 80%
Ouyen (Post Office) 26.2 +2.4 34.6 18th 9.5 +0.6 2.7 6th 20.9 34.2 average 61%
Walpeup Research 26.1 +2.8 34.2 18th 9.5 +0.6 2.0 1st 31.2 32.8 average 95%
South Mallee (district 77)
Hopetoun Airport 25.5 +0.7 34.5 18th 7.6 +0.2 -0.2 1st 23.6 23.7 average 100%
Swan Hill Aerodrome 25.6 +1.4 34.1 18th 8.3 +0.4 0.7 1st 15.2 21.6 average 70%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 23.9   33.8 18th 7.1   0.3 10th 36.4
Nhill Aerodrome 23.0 +0.4 33.2 18th 8.1 +0.9 1.3 10th 68.8 29.6 high 232%
Warracknabeal Museum 23.8 +1.7 33.1 18th 7.6 0.0 1.0 10th 31.0 37.1 average 84%
South Wimmera (district 79)
Edenhope Airport 21.0 +0.3 32.3 18th 8.9 +1.3 2.6 10th 55.6 34.4 high 162%
Grampians (Mount William) 12.9 0.0 23.1 18th 4.4 +0.5 -0.1 6th 44.6 75.6 average 59%
Horsham Aerodrome 22.6 +0.8 32.7 18th 6.7 +1.1 -0.4 10th 42.6 32.3 average 132%
Kanagulk 20.4 -0.2 31.2 18th 7.6 +1.0 0.9 10th 37.4 31.3 average 119%
Longerenong 22.3 +1.4 31.2 29th     0.0 2nd 39.4 41.2 average 96%
Pyrenees (Ben Nevis) 16.6   27.1 18th 6.6   1.7 31st 61.0 51.9 average 118%
Stawell Aerodrome 21.0 +1.0 31.6 18th 8.1 +0.6 1.6 10th 46.8 36.0 average 130%
Lower North (district 80)
Charlton 24.7 +1.0 33.0 18th 7.6 +0.1 0.9 1st 21.0 24.2 average 87%
Echuca Aerodrome 24.4 +2.3 32.3 18th 8.5 -0.1 2.9 1st 18.2 41.7 low 44%
Kerang 24.9 +2.1 33.4 19th 9.2 +0.4 4.3 1st 14.8 37.0 low 40%
Kyabram 23.8 +2.3 30.8 19th 8.3 +0.8 1.6 1st 15.8 38.7 average 41%
Upper North (district 81)
Bendigo Airport 22.7 +2.0 31.0 18th 8.4 +1.8 2.2 1st 30.4 39.6 average 77%
Shepparton Airport 23.2 +1.2 30.3 18th 8.6 +1.3 1.2 1st 27.2 31.6 average 86%
Tatura Inst Sustainable Ag 22.9 +1.8 30.3 19th 8.3 +0.8 0.2 1st 28.6 46.2 average 62%
Yarrawonga 23.7 +1.1 29.3 18th 8.0 +0.7 0.9 1st 76.2 37.3 high 204%
Lower Northeast (district 82)
Benalla Airport 22.4 0.0 27.5 18th 7.8 +1.0 1.4 1st 59.4 35.3 high 168%
Corryong Airport 23.0 +0.6 29.5 17th 5.5 +0.5 0.1 1st 49.4 53.6 average 92%
Dartmouth Reservoir 21.4 +1.0 29.1 17th 7.4 +0.6 0.5 1st 100.4 98.4 average 102%
Hunters Hill 18.1 +2.1 24.8 18th 8.3 +1.3 1.4 31st 72.4 88.3 average 82%
Rutherglen Research 23.1 +2.1 28.1 18th 5.9 -0.3 -1.3 1st 49.8 57.8 average 86%
Strathbogie 18.7 +0.8 24.7 17th 5.8 +0.5 0.1 3rd 93.8 84.5 average 111%
Wangaratta Aero 22.5 +1.1 28.4 18th 6.7 +0.3 0.5 2nd 47.4 49.3 average 96%
Upper Northeast (district 83)
Falls Creek 10.1 +1.0 18.3 18th 2.8 +1.3 -4.1 31st 183.4 121.1 high 151%
Mount Buller 9.9 +1.3 18.1 18th 2.7 +1.4 -2.9 1st 110.4 138.3 average 80%
Mount Hotham 9.0 +1.6 16.7 18th 2.1 +1.4 -4.0 31st
Omeo 20.7 +1.8 27.8 18th 5.3 +0.3 -2.5 1st 56.6 58.8 average 96%
East Gippsland (district 84)
Combienbar AWS 20.4 +2.0 31.4 18th 9.1 +1.2 3.9 1st 57.2 91.8 low 62%
Gabo Island Lighthouse 18.3 +1.1 22.9 9th     8.8 1st 27.2 74.1 v low 37%
Gelantipy 18.5 +2.0 28.9 18th 6.6 +0.6 0.6 7th 52.2 72.4 average 72%
Lakes Entrance (Eastern Beach Road) 19.6 -0.1 31.5 19th 9.5 0.0 4.8 11th 52.8 63.4 average 83%
Mallacoota 19.9 +0.8 27.4 9th 11.0 +1.2 5.9 15th 53.6 78.9 average 68%
Mount Nowa Nowa 20.2 +1.1 32.2 18th 9.9 +0.9 5.0 1st 57.4 73.2 average 78%
Point Hicks (Lighthouse) 20.3 +1.6 31.3 19th 11.5 +0.5 8.4 6th 47.0 75.5 low 62%
West Gippsland (district 85)
Bairnsdale Airport 21.8 +1.9 32.7 18th 7.2 -0.3 1.0 11th 64.4 60.9 average 106%
Corner Inlet (Yanakie) 18.3   30.9 18th 9.4   3.2 3rd 33.6
East Sale 21.2 +1.9 31.8 18th 7.9 +0.4 2.9 10th 51.0 57.1 average 89%
East Sale Airport 22.0   32.6 18th 8.5   2.3 7th 61.0
Morwell (Latrobe Valley Airport) 20.9 +1.3 30.9 18th 8.3 +0.9 2.3 7th 55.6 71.1 average 78%
Mount Baw Baw 10.4 +1.7 20.0 17th 2.9 +1.3 -2.0 1st 157.4 152.9 average 103%
Mount Moornapa 21.0 +2.3 32.4 18th 8.9 +0.8 4.7 1st 86.6 82.4 average 105%
Nilma North (Warragul) 19.9   30.9 18th 8.7   3.1 7th 91.8
Pound Creek 19.3 +0.6 29.6 18th 8.9 +0.6 2.1 15th 41.6 71.0 low 59%
Wilsons Promontory Lighthouse 16.8 +1.0 28.3 18th 11.3 +1.3 8.2 30th 54.8 91.9 low 60%
Yarram Airport 20.5 +0.7 32.5 18th 8.1 +0.5 1.5 15th 32.4 45.8 low 71%
East Central (district 86)
Bundoora (Latrobe University) 21.9 +2.1 31.2 18th 9.1 +0.4 3.6 3rd 36.6 63.9 low 57%
Cerberus 19.7 +1.2 30.6 18th 9.2 +0.5 2.8 3rd 50.8 66.8 average 76%
Coldstream 21.2 +1.6 29.0 18th 7.4 +0.8 2.0 10th 69.8 66.3 average 105%
Cranbourne Botanic Gardens 20.1 +1.1 30.8 18th 9.3 +0.5 4.6 15th 47.0 76.2 low 62%
Essendon Airport 21.4 +2.1 30.9 18th 9.7 +1.4 4.3 3rd 33.8 59.5 low 57%
Ferny Creek 17.4   26.4 18th 8.6   4.3 30th 111.8
Frankston AWS 19.1 +1.3 30.2 18th 11.0 +0.4 7.1 15th
Melbourne (Olympic Park) 20.7   30.9 18th 11.1   6.8 3rd 40.4
Melbourne Airport 21.6 +2.2 30.5 18th 8.9 +0.4 3.7 15th 31.8 53.2 average 60%
Moorabbin Airport 20.7 +1.4 31.8 18th 10.2 +0.9 4.8 15th 48.4 68.8 average 70%
Rhyll 19.1 +1.2 28.7 18th 11.1 +0.5 8.2 15th 47.0 59.7 average 79%
Scoresby Research Institute 21.4 +2.3 30.1 18th 9.3 +0.5 3.5 7th 54.8 83.3 low 66%
Viewbank 21.6 +1.2 31.0 18th 9.4 +0.5 4.0 15th 40.4 61.4 average 66%
Wonthaggi 19.6 +1.4 30.6 18th 9.7 +0.8 4.9 15th 67.2 87.0 average 77%
West Central (district 87)
Avalon Airport 21.4 +1.2 33.6 18th 8.5 +0.5 2.2 10th 32.0 48.0 average 67%
Breakwater (Geelong Racecourse) 20.6   32.1 18th 9.6   5.0 15th 27.6
Laverton RAAF 21.0 +1.7 31.3 18th 9.3 +1.0 3.8 3rd 49.0 55.3 average 89%
Sheoaks 20.0 +1.7 29.9 18th 8.2 +1.0 1.6 15th 32.6 53.3 low 61%
North Central (district 88)
Castlemaine Prison 21.0 +1.7 28.3 18th 8.1 +1.4 1.5 2nd 32.9 57.1 average 58%
Eildon Fire Tower 18.1 +1.2 24.4 18th 8.3 +1.0 3.8 31st 43.4 47.9 average 91%
Lake Eildon 21.8 +1.8 30.0 18th 7.7 +0.4 2.7 7th 54.6 77.5 average 70%
Mangalore Airport 22.4 +1.9 29.2 18th 7.9 +0.7 -0.3 1st 29.4 45.4 average 65%
Maryborough 22.0 +1.9 31.1 18th 8.2 +1.0 2.5 31st 24.6 48.9 low 50%
Wallan (Kilmore Gap) 17.8 +1.7 25.2 18th 8.0 +1.2 3.6 30th 43.8 51.1 average 86%
Western Plains (district 89)
Ararat Prison 20.1 +1.8 31.0 18th 6.5 +0.4 1.0 10th 65.8 56.1 average 117%
Ballarat Aerodrome 18.4 +1.7 27.0 18th 6.9 +0.7 0.4 10th 54.2 66.4 average 82%
Westmere 19.4 -0.1 29.9 18th 6.1 +0.8 -0.2 10th 49.8 41.6 average 120%
West Coast (district 90)
Aireys Inlet 19.6 +1.4 31.7 18th 10.1 +0.8 6.6 10th 35.8 59.4 average 60%
Cape Nelson Lighthouse 18.3 +1.0 33.4 18th 11.2 +0.8 7.1 3rd 41.6 47.8 average 87%
Cape Otway Lighthouse 17.6 +0.6 31.6 18th 10.7 +1.1 5.7 3rd 68.6 80.4 average 85%
Casterton 19.4 0.0 30.2 18th 8.0 +1.1 2.3 10th 42.2 46.0 average 92%
Colac (Mount Gellibrand) 18.2 +1.0 28.7 18th 8.3 +0.8 4.5 10th 20.8 51.5 low 40%
Dartmoor 19.7   31.5 18th 8.6   2.5 10th 38.2
Hamilton Airport 19.0 +1.1 29.9 18th 7.5 +1.0 2.0 10th 43.8 55.6 average 79%
Mortlake Racecourse 19.3 +1.2 29.9 18th 7.4 +1.1 1.4 3rd 42.4 51.3 average 83%
Port Fairy AWS 18.7 +0.4 31.5 18th 10.1 +0.7 5.0 3rd 38.0 52.8 average 72%
Portland (Cashmore Airport) 18.0 +1.1 30.8 18th 9.5 +1.2 4.0 27th 51.0 61.2 average 83%
Warrnambool Airport NDB 18.6 +0.6 30.5 18th 8.6 +1.3 3.4 3rd 58.6 62.4 average 94%

Notes

The Monthly climate summary, generally published on the first working day of each month, lists 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 11 am on Wednesday 1 November 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites 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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

Media
(03) 9669 4057
Enquiries