Greater Melbourne in October 2017: below average rainfall, above average temperatures

Rainfall during October was average to below average at all sites across Greater Melbourne. Mean temperatures across Melbourne were very much above average, with a spell of warm days and nights during the third week of the month.

Below average rainfall

  • During the month, average to below average rainfall was recorded at all sites across Greater Melbourne
  • Low pressure systems and southerly airstreams delivered most rainfall, with heaviest falls during the month on the 12th and 25th

Above average daytime and overnight temperatures

  • For the month as a whole, both daytime and overnight temperatures were very much above average
  • Warm northerly airstream between the 16th and 18th resulted in high daytime temperatures across Greater Melbourne, with daytime temperatures exceeding 30 °C at most sites on the 18th
  • The highest daytime temperature during the month, 31.8 °:C, was recorded at Moorabbin Airport on the 18th
  • Warmest night during the month was on the 19th, when Moorabbin Airport had its warmest October night (highest daily minimum temperature) on record

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 40.4 mm, with most of the monthly total recorded on the 12th and 25th
  • The mean daily maximum temperature for this site was 20.7 °C. The warmest day was 30.9 °C on the 18th, and the coolest day was on the 6th when the temperature reached only 15.0 °C
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 11.1 °C. The coldest morning was 6.8 °C on the 3rd, and the warmest morning was on the 19th when the minimum temperature was 21.7 °C

Further information

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Extremes in October 2017
Hottest day 31.8 °C at Moorabbin Airport on the 18th
Warmest days on average 21.8 °C at Bundoora (Latrobe University)
Coolest days on average 17.4 °C at Ferny Creek
Coldest day 11.6 °C at Ferny Creek on the 6th
11.6 °C at Wallan (Kilmore Gap) on the 21st
Coldest night 2.0 °C at Coldstream on the 10th
Coolest nights on average 7.4 °C at Coldstream
Warmest nights on average 11.1 °C at Melbourne (Olympic Park)
Warmest night 23.1 °C at Moorabbin Airport on the 19th
Warmest on average overall 15.9 °C at Melbourne (Olympic Park)
Coolest on average overall 12.9 °C at Wallan (Kilmore Gap)
Wettest overall 116.5 mm at Toolangi (Mount St Leonard DPI)
Wettest day 29.6 mm at Newham (Cobaw) on the 12th
Strongest wind gust 93 km/h at South Channel Island on the 29th

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



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
Bundoora (Latrobe University) 21.8 +2.0 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
Laverton RAAF 21.0 +1.7 31.3 18th 9.3 +1.0 3.8 3rd 49.0 55.3 average 89%
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%
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%
Wallan (Kilmore Gap) 17.8 +1.7 25.2 18th 8.0 +1.2 3.6 30th 43.8 51.1 average 86%

Daily maximum temperatures for October 2017
12345678910111213141516171819202122232425262728293031
Bundoora (Latrobe University)17.518.324.026.220.015.023.225.019.320.524.818.816.921.628.830.331.226.216.716.321.423.218.516.527.228.016.817.0
Cerberus17.016.720.720.520.314.920.526.117.417.323.217.716.715.417.522.929.630.624.516.015.416.716.518.416.817.326.318.527.815.816.0
Coldstream17.418.622.725.421.216.122.623.818.820.823.717.816.519.023.627.528.929.025.216.815.118.221.923.419.817.825.922.125.315.117.3
Cranbourne Botanic Gardens16.116.722.021.819.615.021.225.418.318.823.517.517.919.025.430.823.915.818.115.719.620.017.417.326.427.016.316.6
Essendon Airport18.517.623.724.420.415.923.824.620.919.725.720.117.517.220.528.830.430.925.817.115.115.720.722.317.317.727.621.228.716.917.1
Ferny Creek13.215.319.322.717.811.618.420.714.817.420.013.212.714.619.024.126.126.421.113.012.113.217.119.915.412.722.417.222.311.813.3
Frankston AWS13.414.818.523.918.215.221.622.315.118.022.215.616.116.819.027.128.830.220.215.313.715.916.319.518.217.523.520.026.413.614.3
Laverton RAAF18.216.622.221.821.415.924.026.419.418.724.819.217.617.118.725.531.031.324.616.715.117.420.020.317.617.727.421.228.616.517.3
Melbourne (Olympic Park)17.216.422.320.819.415.023.725.318.718.825.619.216.716.117.628.630.230.925.616.215.416.019.020.518.516.827.421.428.617.016.4
Melbourne Airport18.518.123.426.321.216.223.524.919.921.124.918.817.617.821.728.630.430.525.716.815.117.221.424.418.016.827.021.928.715.816.9
Moorabbin Airport16.915.620.523.318.915.223.026.517.720.525.117.716.916.419.627.030.731.825.116.915.617.018.320.318.617.827.220.528.515.916.0
Scoresby Research Institute17.717.922.626.020.215.522.224.418.419.123.918.416.718.021.928.029.630.125.316.715.418.120.923.519.317.026.620.626.9
Viewbank17.818.224.026.220.115.823.025.119.721.224.718.616.418.322.128.330.231.026.517.016.717.122.523.518.616.827.120.927.617.117.5
Wallan (Kilmore Gap)13.914.418.921.418.012.218.218.716.517.821.515.013.414.820.023.624.825.222.713.411.613.520.921.916.713.722.519.423.412.113.2
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for October 2017
12345678910111213141516171819202122232425262728293031
Bundoora (Latrobe University)7.06.13.65.910.78.84.710.613.45.76.07.611.46.04.49.811.219.810.010.410.59.813.212.29.615.67.34.5
Cerberus9.15.22.85.611.510.25.811.39.85.17.59.511.36.02.99.711.011.317.49.310.610.211.29.212.410.67.114.110.17.88.5
Coldstream4.14.72.13.28.38.62.17.711.42.03.57.711.14.22.37.36.96.214.77.19.99.410.97.613.212.28.014.87.66.83.1
Cranbourne Botanic Gardens8.96.95.67.113.08.96.09.311.85.76.39.211.47.74.69.711.119.59.410.19.710.99.811.910.98.313.09.47.36.9
Essendon Airport8.36.74.36.511.78.55.910.713.06.17.88.410.88.15.49.510.213.521.19.110.29.410.910.812.811.910.615.09.77.66.4
Ferny Creek4.75.46.67.313.75.45.110.99.74.88.66.37.37.15.59.916.318.118.17.56.56.98.38.210.48.98.211.79.54.34.8
Frankston AWS9.810.97.78.511.49.88.610.213.38.910.011.311.610.37.110.711.717.518.111.610.810.611.211.912.811.610.313.011.88.28.9
Laverton RAAF6.36.13.84.912.79.17.011.212.44.46.38.08.86.03.88.710.914.922.17.210.810.311.410.012.712.610.414.58.28.04.5
Melbourne (Olympic Park)9.79.56.88.511.710.17.211.114.08.09.810.513.18.26.811.312.814.521.711.311.011.111.912.113.312.910.315.011.58.88.1
Melbourne Airport6.15.74.25.311.78.54.710.912.84.57.06.98.25.53.78.712.411.519.37.29.99.410.39.212.711.311.814.49.06.95.2
Moorabbin Airport9.27.95.86.512.29.95.79.713.17.16.210.212.38.14.89.610.813.923.111.511.311.211.810.813.011.38.114.59.38.49.3
Scoresby Research Institute7.15.84.25.210.38.83.59.312.65.76.78.811.86.03.710.611.212.921.88.810.09.910.89.312.611.114.49.47.8
Viewbank8.66.74.25.99.38.84.89.213.45.76.79.012.36.84.09.810.410.822.210.410.410.211.19.913.011.69.915.09.57.85.1
Wallan (Kilmore Gap)5.45.56.96.411.44.85.17.811.35.18.75.47.35.75.38.113.715.116.36.46.16.17.28.510.88.68.913.310.73.63.8
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for October 2017
12345678910111213141516171819202122232425262728293031
Bonbeach (Carrum) - - - - - 6.0 - - 2.0 - - 10.3 - - - - - - - 4.2 - - - - 11.5 - - - - 6.8 3.2
Bullengarook East 2.2 - - - 0.4 0.2 - - 3.0 - - 19.4 - 0.8 - - - - - 0.6 1.0 0.6 2.4 - 10.0 0.4 - - - 3.8 4.0
Bundoora (Latrobe University) 0.6 0.4 - - - 3.8 - - 0.6 - - 9.4 - - - - - - - 0.2 - 0.6 - - 8.6 - - - 5.0 7.4
Burnside - 0.8 - - - - - - 1.4 - - 4.0 - - - - - - - 5.4 - - - - 13.4 0.6 - - - 4.2 3.4
Cerberus 0.2 - - - - 1.0 - - 5.8 0.2 - 8.8 - - - - - - 3.2 9.2 - 0.8 2.0 - 7.2 0.2 - 1.2 - 5.8 5.2
Coldstream - - - - - 9.6 - 0.2 14.6 - - 9.6 - - - - - - - 5.4 - 2.6 1.8 - 12.0 0.2 0.2 0.8 - 4.6 8.2
Cranbourne Botanic Gardens 1.2 0.4 - - - 2.2 - - 0.8 - - 9.2 0.2 - - 0.2 - 0.8 4.2 - 1.2 3.4 - 12.0 - - 1.0 - 7.0 3.2
Essendon Airport - 0.2 0.2 - - 0.6 - - 2.0 - - 8.0 - - - - - - - 2.0 - 1.6 0.2 0.2 9.2 0.6 0.2 - - 5.0 3.8
Ferny Creek 0.8 0.2 0.2 - - 23.2 0.2 - 1.6 - - 22.6 0.8 0.2 - 0.2 - - 0.2 6.0 - 8.8 9.2 - 12.6 1.6 0.2 3.2 - 10.8 9.2
Kinglake West (Wallaby Creek) 0.6 2.8

- 2.2

8.0 0.2 -
- 0.6 0.2


-

5.0 2.8 0.2 8.6 1.2 - 0.2

3.6
Laverton RAAF 0.2 0.2 - - - 0.6 - - 4.4 - - 8.8 - - - - - - - 4.6 - 0.2 0.2 - 18.4 0.2 - 0.2 0.2 4.0 6.8
Main Ridge - - - - - 2.0 - 4.1 - - - 10.4 - - - - - - - 11.2 - - - 16.0 - - - - 11.4
Melbourne (Olympic Park) - - - - - 2.4 0.2 - 2.4 0.2 - 10.0 - - - - - - - 2.6 - - - 0.2 11.4 0.2 - 0.4 - 4.4 6.0
Melbourne Airport - 1.2 - - - - - - 1.0 - - 5.6 - - - - - - - 3.4 - - - - 12.4 0.2 - - - 4.4 3.6
Mitcham - -

- 8.2 0.2
2.0 - -
- 0.2 0.2


-

2.0 1.6 0.2 10.4 0.8 - 1.0

8.6
Moorabbin Airport 0.2 - - - - 4.8 - - 3.0 - - 11.2 - - - - - - - 4.4 - 0.4 0.4 - 13.4 - - - 0.2 5.8 4.6
Mornington 3.0 - - - 2.0 3.0 - - 9.4 0.4 - - - - - 9.6 0.4 6.8 - 9.5 - - 7.2 8.2
Newham (Cobaw) - - - - - 0.6 - - 3.6 - - 29.6 - - - - - - - 1.6 - - - - 8.0 - - - - 4.0 4.6
Oakleigh (Metropolitan Golf Club) 0.4 - - - 8.2 - - 1.6 - - 10.2 - - - - - - - 3.8 - 2.8 - 17.0 0.7 - - - 6.2 2.2
Preston Reservoir 0.2 0.6

- 2.4

1.0 - -
0.2 -



-

0.2 0.4 - 9.4 - - -

7.4
Rosebud (Country Club) - - - - - 2.6 - - 4.0 - - 9.6 - - - - - - 11.0 2.2 2.0 4.0 - 6.8 - - 0.8 - 9.6 12.2
Scoresby Research Institute - - - - - 13.4 - - 3.0 - - 14.8 - - - - - - - 0.8 - 0.8 3.6 0.2 1.4 9.8 - 1.8 - 5.2
Springvale (Sandown) - - - - - 6.4 - - 4.0 - - 11.8 - - - - - - - 3.8 - - - - 15.0 - - - - 5.8 6.2
Springvale Necropolis - - - - - 9.0 2.0 - - 13.0 - - - - - - - 4.0 4.0 - 15.0 - - 7.0 7.0
Toolangi (Mount St Leonard DPI) - 3.4 - - - 17.4 - - 2.0 - - 28.5 - - - - - - - 10.4 - - 13.8 - 13.4 - - - - 13.4 14.2
Toorourrong Reservoir (Toorourrong) 0.2 1.2

- 2.2 2.2
0.6 - -
- 0.2



-

0.6 2.0 - 11.4 0.6 - -

2.8
Viewbank - 0.2 - - - 3.8 - - 0.6 - - 9.6 -
- - - - - - - 0.8 - - 9.2 0.4 - - - 5.2 10.6
Wallan - 2.4 - - - 0.6 - - 2.0 - - 12.2 - 1.0 - - - - - 2.6 0.4









Wallan (Kilmore Gap) - 1.8 - 0.2 0.2 1.0 - 0.2 2.4 0.2 - 14.2 - 1.2 0.2 0.2 - - - 3.6 - 0.4 0.2 0.2 9.0 0.8 0.6 - - 5.4 1.8
Warburton (O'Shannassy Reservoir (Quarte 0.2 0.4

- 11.4


- -
- 0.4



-

0.4 - 2.8 15.6 - - 0.8

9.8
Willowmavin (Avalon Station) 0.6 - - 0.2 0.4 0.2 - - 0.8 0.2 - 26.0 - - - - - - - 4.0 - - - - 6.6 - - - - 3.8 4.4
Woodend 0.6 0.6 - - 0.6 0.8 - 0.4 1.6 - - 22.4 - 0.4 - - - - 0.2 - - 0.4 1.2 - 10.8 0.4 - 0.8 - 3.8 0.8
Yan Yean - 0.6

- 2.4

3.6 - -
- -



-

1.0 1.4 - 11.0 0.2 -


8.4
Yarra River @ Warrandyte - - - - - 6.8 - - 1.6 - - 11.0 0.2 - - - - - - 2.8 - 3.0 0.6 - 9.2 - - 0.4 0.2 5.2 13.8
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Notes

The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Greater Melbourne 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.

In September 2017 this summary was broadened to include data from observing sites in or near the Greater Melbourne “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

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