Melbourne in July 2017: Drier than average with warm days and cold nights

July 2017 was drier than average across Greater Melbourne. Daytime temperatures were generally warmer than average, especially at the end of the month. Overnight temperatures were generally colder than average, especially at the start of the month which saw many stations recording temperatures below zero.

Drier than average

  • July 2017 was drier than average across all Melbourne reporting stations in this summary.
  • Some long-running sites recorded less than half their average rainfall for the month. Essendon Airport recorded 44% of average and Melbourne Airport recorded 45% of its average July rainfall.

Cold nights and warm days

  • Nights were generally below average, with some very cold nights at the start of the month. Many stations saw sub-zero temperatures from the 1st to the 3rd. At some stations, it was the coldest night since August 1997.
  • The warmest day across Greater Melbourne was on the 29th, Moorabbin Airport recorded 18.7 °C on this day.
  • Cerberus and Coldstream had their lowest July temperature on record, -3.0 °C and -5.3 °C on the 3rd and the 2nd respectively.
  • Wallan (Kilmore Gap) recorded its coldest July overnight temperatures since 1997.

A windy end to the month

  • The 29th of July saw strong winds across Greater Melbourne. This included a maximum wind gust of 107 km/h at Fawkner Beacon and 104 km/h at Melbourne Airport. Planes were grounded at Melbourne Airport during the peak of the event and there were reports of building damage and trees being blown over across the city.

Further information

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Extremes in July 2017
Hottest day 18.7 °C at Moorabbin Airport on the 29th
Warmest days on average 14.6 °C at Laverton RAAF
Coolest days on average 9.6 °C at Wallan (Kilmore Gap)
Coldest day 5.9 °C at Wallan (Kilmore Gap) on the 16th
Coldest night -5.3 °C at Coldstream on the 2nd
Coolest nights on average 2.9 °C at Coldstream
Warmest nights on average 7.5 °C at Frankston AWS
Warmest night 11.8 °C at Moorabbin Airport on the 30th
Warmest on average overall 10.6 °C at Melbourne (Olympic Park)
Coolest on average overall 6.4 °C at Wallan (Kilmore Gap)
Wettest overall 111.4 mm at Warburton (O'Shannassy Reservoir)
Driest overall 16.0 mm at Melbourne Airport
Wettest day 24.2 mm at Warburton (O'Shannassy Reservoir) on the 5th
Strongest wind gust 107 km/h at Fawkner Beacon on the 29th



Record lowest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Cerberus -3.0 on the 3rd -2.9 on the 19th in 2015 26 6.4
Coldstream -5.3 on the 2nd -4.5 on the 20th in 2015 23 3.9



Lowest July mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
Wallan (Kilmore Gap) 3.3 2.8 in 1997 4.0



Summary statistics for July 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2017
Diff
from
average
Highest for
July
2017
Mean for
July
2017
Diff
from
average
Lowest for
July
2017
Total for
July
2017
Average
for
July
Rank of
July
2017
Fraction of
July
average
Bundoora (Latrobe University) 14.3 +0.9 18.1 29th 4.9 -0.7 -2.7 2nd 26.2 49.4 low 53%
Cerberus 13.8 +0.2 18.4 29th 5.2 -1.2 -3.0 3rd 67.2 72.7 average 92%
Coldstream 14.2 +0.9 18.5 29th 2.9 -1.0 -5.3 2nd 43.6 62.3 low 70%
Cranbourne Botanic Gardens     15.7 4th 6.3 +0.1 0.3 2nd 51.1 70.4 low 73%
Essendon Airport 14.3 +1.2 17.8 30th 5.4 0.0 -2.0 1st 19.4 43.6 v low 44%
Ferny Creek 9.8   14.1 29th 4.8   1.6 15th 95.8
Frankston AWS 13.1 +0.3 17.3 29th 7.5 -0.5 2.0 1st
Laverton RAAF 14.6 +0.9 18.0 25th 4.9 -0.2 -1.7 1st 27.2 38.7 average 70%
Melbourne (Olympic Park) 14.5   18.1 30th 6.6   0.8 2nd 30.4
Melbourne Airport 14.0 +0.9 17.0 30th 4.8 -0.6 -0.6 2nd 16.0 35.9 low 45%
Moorabbin Airport 14.4 +0.7 18.7 29th 5.9 -0.3 -2.1 2nd 38.2 61.7 low 62%
Scoresby Research Institute 14.0 +1.0 17.7 29th 5.7 -0.1 -0.6 1st 53.4 73.4 low 73%
Viewbank 14.4 +0.5 18.2 30th 5.0 -1.0 -2.8 2nd 26.2 49.6 v low 53%
Wallan (Kilmore Gap) 9.6 +0.5 14.0 29th 3.3 -0.7 0.0 16th 46.2 63.1 low 73%

Daily maximum temperatures for July 2017
12345678910111213141516171819202122232425262728293031
Bundoora (Latrobe University)11.813.813.815.615.314.313.113.214.414.814.115.213.915.411.712.015.814.212.510.913.512.015.015.416.814.714.214.618.117.715.2
Cerberus12.612.211.315.014.113.913.612.712.214.514.313.214.914.212.711.615.413.712.812.011.813.613.914.116.913.714.414.418.415.814.3
Coldstream11.614.113.114.214.513.512.712.212.814.414.914.414.814.711.812.316.312.513.011.313.613.316.014.716.914.614.714.418.516.916.4
Cranbourne Botanic Gardens12.713.912.815.714.613.711.814.914.815.314.214.412.012.215.212.312.711.513.412.113.0
Essendon Airport12.213.413.316.415.314.513.414.214.616.314.414.812.815.613.011.914.313.912.410.513.912.015.315.416.815.713.014.816.417.815.0
Ferny Creek8.19.611.411.310.59.99.27.67.79.810.010.79.810.77.58.110.77.78.06.19.38.59.210.613.89.29.810.014.112.911.5
Frankston AWS12.113.813.413.612.312.712.212.312.212.813.315.814.012.411.111.414.312.113.411.612.212.912.212.115.712.313.812.617.313.413.5
Laverton RAAF13.913.713.315.715.215.014.014.614.816.414.815.113.515.512.912.514.715.212.411.213.813.215.415.618.014.713.214.917.317.414.1
Melbourne (Olympic Park)12.714.313.916.215.815.014.213.514.616.014.315.113.315.912.012.515.314.513.210.713.812.414.116.117.215.014.214.317.918.114.8
Melbourne Airport12.612.612.915.914.314.412.813.914.116.013.814.312.614.912.411.314.914.212.110.714.112.114.615.416.614.912.214.716.117.014.7
Moorabbin Airport12.914.214.416.614.915.014.012.812.915.313.815.715.115.011.912.015.413.213.411.314.712.713.715.817.814.415.214.618.716.113.7
Scoresby Research Institute12.113.414.115.814.314.013.313.312.314.814.514.614.315.113.111.414.712.213.111.213.111.813.614.017.414.613.914.517.717.115.3
Viewbank12.614.113.315.615.014.313.513.513.414.914.515.214.515.712.412.415.113.713.210.413.712.515.015.816.714.814.515.618.218.215.5
Wallan (Kilmore Gap)7.68.77.89.110.89.58.57.510.19.410.810.29.011.19.55.99.98.87.96.89.67.59.79.211.811.48.311.314.013.611.9
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 July 2017
12345678910111213141516171819202122232425262728293031
Bundoora (Latrobe University)-1.8-2.71.09.08.93.65.25.06.05.54.7-0.12.79.01.90.55.28.56.86.40.74.98.65.59.08.51.36.08.510.53.7
Cerberus-1.1-1.6-3.02.49.96.74.83.95.77.86.0-0.51.86.86.52.36.19.88.68.00.63.49.67.77.710.44.36.76.811.03.5
Coldstream-3.9-5.3-4.44.88.20.02.8-1.16.71.64.3-3.1-0.96.4-1.3-3.04.19.15.25.82.1-1.99.05.67.69.2-0.94.35.011.42.4
Cranbourne Botanic Gardens0.70.30.68.78.46.06.27.36.51.44.09.03.93.16.410.07.57.93.15.58.57.810.09.98.58.411.15.9
Essendon Airport-2.01.83.28.49.13.77.15.46.25.84.5-0.64.09.12.73.65.68.56.66.21.24.97.85.28.68.33.87.18.810.43.3
Ferny Creek2.34.66.06.47.33.34.84.74.14.15.44.66.55.81.62.94.36.15.13.71.63.75.95.65.66.53.75.25.57.75.7
Frankston AWS2.03.35.09.511.06.47.57.28.87.99.03.66.19.98.04.76.310.39.88.44.45.18.78.89.510.95.47.39.311.17.1
Laverton RAAF-1.72.14.39.07.92.77.04.45.34.93.80.13.29.01.90.55.88.45.95.60.34.67.44.88.710.11.75.58.68.72.1
Melbourne (Olympic Park)1.10.83.89.010.14.88.05.37.37.06.93.24.89.94.53.05.79.78.97.93.35.48.48.19.810.94.46.29.711.36.7
Melbourne Airport-0.4-0.62.77.78.72.66.64.04.84.83.91.63.78.61.92.75.27.46.54.91.33.96.34.37.98.33.65.47.98.72.9
Moorabbin Airport-0.5-2.1-0.66.49.84.46.45.36.06.26.70.53.89.64.02.66.79.48.48.13.15.39.07.09.711.24.17.78.411.84.2
Scoresby Research Institute-0.61.00.98.79.32.96.35.16.76.76.50.43.48.92.43.46.08.97.77.22.95.29.05.88.99.74.26.47.311.45.3
Viewbank-1.3-2.8-0.59.39.92.85.42.86.66.85.00.32.09.11.20.73.99.08.47.02.33.18.56.89.69.92.13.97.611.14.9
Wallan (Kilmore Gap)1.10.32.65.85.82.84.22.53.71.83.43.63.84.92.10.00.64.63.54.12.61.02.24.35.05.42.43.43.75.35.4
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 July 2017
12345678910111213141516171819202122232425262728293031
Bonbeach (Carrum) - - - 6.0 - - - - 2.0 - - - - 3.4 - - - - 2.0 3.0 3.0 - - 4.5 - 7.0 2.0 4.4
Bullengarook East 0.2 - - 12.2 1.8 0.4 2.8 0.2 0.8 0.2 - 0.4 0.2 3.0 1.2 0.2 2.6 5.6 6.0 2.6 - - 2.2 1.8 2.0 0.8 4.2


Bundoora (Latrobe University) 0.1 - - 2.8 0.4 0.4 - - 0.6 - 0.4 - - 0.8 0.3 - - 0.4 7.0 1.4 4.0 - - 2.8 - - 0.2 4.6 - - -
Burnside - - - 3.8 - - - - - - - - - 1.8 0.5 - - 0.5 4.0 4.0 1.4 - - 0.4 - - 0.8 1.4 - - -
Cerberus - - - 8.0 - 0.4 0.4 - 5.4 - 2.8 0.4 0.2 2.2 0.2 0.8 1.4 0.6 5.4 6.0 1.6 - - 7.0 0.2 8.4 4.8 10.8 0.2 - -
Cheltenham Kingston Centre

8.2












6.4













Coldstream - 0.2 0.2 3.0 3.4 0.4 - - 1.4 - 1.4 - 0.2 0.8 0.4 - - 1.2 7.6 6.8 6.4 - - 3.0 0.4 0.2 1.2 4.6 - - 0.8
Cranbourne Botanic Gardens 0.2 - - 8.2 0.2 0.5 4.2 - - - - 4.8 - - - 0.2 5.4 8.2 0.8 - - 6.2 - 5.2 1.6 5.4 - - -
Essendon Airport 0.2 - - 2.0 - - - - 0.2 - 0.2 - - 0.4 0.2 - - 0.4 2.4 2.0 3.4 - - 1.6 - - 3.8 2.6 - - -
Ferny Creek - - - 11.0 1.4 - - - 4.2 - 9.6 0.2 - 5.2 0.8 0.4 - 0.4 10.4 15.0 11.4 - - 6.4 - 6.4 3.6 8.6 - 0.2 0.6
Kinglake West (Wallaby Creek) 0.2 0.2 0.4 11.8 4.8 0.2

2.2 0.2 - 0.2 0.4 1.8 0.2

5.4 6.8 13.4 3.0 0.2 - 2.2

- 7.4 0.2 0.4
Laverton RAAF - 0.2 - 2.8 - - - 0.2 0.6 - 1.4 0.2 - 1.4 0.6 - - 0.4 4.2 1.2 2.2 - - 6.0 - 1.0 1.0 3.8 - - -
Main Ridge - - - 7.6 2.0 - - - - 2.8 - 6.6 - - - - 16.2 - 7.2 - 6.2 - 11.8


Melbourne (Olympic Park) - - - 3.0 - - - - 0.8 - 0.4 - - 2.0 - - - 0.2 5.0 0.6 4.2 - - 7.0 - 2.4 2.0 2.8 - - -
Melbourne Airport - - - 3.0 0.2 - - - - - 1.0 - - 0.4 0.2 - - 0.2 2.4 2.6 1.6 - - 3.8 - - - 0.6 - - -
Melbourne Botanical Gardens 0.2 -




























Mitcham - - 0.2 5.0 0.4 0.2

0.8 - 4.6 -
2.4 1.0

0.4 4.6 4.8 5.2
- 4.8

- 5.0 -
1.2
Moorabbin Airport - - - 5.2 - - - - 2.2 - 2.6 0.2 - 3.2 - - - - 10.2 1.0 3.4 - - 1.8 - 1.2 1.6 5.6 - - -
Mornington - - - 8.4 - - - 4.6 0.6 - - 3.6 1.0 0.8 4.0 4.2 1.6 7.8 - 7.9 3.4 9.4 - - -
Oakleigh (Metropolitan Golf Club) - - 4.6 - - - - - 1.2 0.1 3.2 - - 3.6 - - - 1.1 4.8 1.4 2.8 - - 3.6 - 2.9 2.4



Preston Reservoir 0.2 - - 3.2 0.2 -

- - 0.2 -
0.6 0.4

0.2 2.4 5.2 2.4
- 3.4

- 5.4 -

Romsey - 0.4 0.9 3.2

























Rosebud (Country Club) - - - 6.8 2.2 0.4 0.4 - 2.0 - 1.0 - - 2.4 0.2 2.0 - 1.2 3.0 6.0 1.4 - - 2.0 0.6 0.6 4.4 11.0


Scoresby Research Institute 0.2 - - 8.6 1.0 - - - 2.2 - 7.4 0.2 - 3.4 - - - - 5.8 2.0 6.6 - - 5.0 - 2.6 1.8 6.6 - - -
Springvale (Sandown) - - - 6.0 0.6 - - - 1.4 - 4.0 - - 3.4 0.6 - - 0.2 2.0 4.0 6.6 - - 2.2 - 2.0 2.0 6.6


Springvale Necropolis - - - - - - - - - - 5.1 - - - 4.0 - - - - - - - - 3.0 - 11.0


Toorourrong Reservoir (Toorourrong) 0.2 0.2 - 10.2 1.2 -

0.4 0.2 - -
0.8 0.2

2.8 1.8 5.6 2.2
- 2.6

- 2.6 -

Viewbank 0.2 - - 3.0 0.4 - - - 0.2 - 0.2 - 0.2 1.0 0.2 0.2 - 0.4 6.6 3.8 2.6 - - 1.6 - 0.2 1.2 4.2 - - -
Wallan 1.0 - - 7.8 2.2 0.4 2.2 0.4 1.0 - - - - 0.8 - - - 3.0 - 3.0 3.6 - - 3.0 - - 4.8 3.4


Wallan (Kilmore Gap) 0.4 - - 10.4 3.4 0.2 2.0 0.4 0.8 0.4 - - - 1.4 0.2 - 0.2 3.4 3.2 4.6 3.0 0.4 - 4.0 0.2 0.2 1.0 6.4 - - -
Warburton (O'Shannassy Reservoir (Quarte 0.4 - - 10.2 24.2 1.4

- - 5.6 -
1.4 5.2

9.2 3.0 21.0 7.0
- 4.0

- 15.8 - 0.4 2.6
Yan Yean 0.2 - - 4.4 1.2 -

0.4 - 0.4 -
0.4 1.0

8.0 3.2 6.0 3.0
- 4.2

- 1.0 -
0.2
Yarra River @ Warrandyte - - - 5.4 1.2 0.2 - - 3.2 - 0.6 - - 2.2 - - - 0.4 6.0 1.6 2.8 0.2 - 1.8 - - 0.4 5.4 0.2 - -
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 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.

This statement has been prepared based on information available at 11 am on Tuesday 1 August 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
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