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An extended list of climate statistics recorded is provided below. There is also a summary table for printing with the commonly requested statistics and a map showing the location of this site. Monthly statistics are only included if there are more than 10 years of suitable data.
Note: Many statistics are updated quarterly and recent weather events may not be represented in the statistics below. For more current information on recent extreme values, please refer to the corresponding Daily rainfall, Maximum temperature and Minimum temperature data tables for this site, and our Australian Climate and Weather Extremes Monitoring System. Missing observations associated with the observer being unavailable (where observations are undertaken manually), a failure in the observing equipment, or when an event has produced suspect data may result in an extreme event not being recorded.Site name: ISISFORD POST OFFICE | Site number: 036026 | Commenced: 1885 | Map | |
Latitude: 24.26° S | Longitude: 144.44° E | Elevation: 203 m | Operational status: Open |
Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
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Temperature | |||||||||||||||||
Maximum temperature | |||||||||||||||||
Mean maximum temperature (°C) | 37.0 | 35.9 | 34.4 | 30.8 | 26.3 | 23.0 | 22.8 | 25.3 | 29.4 | 33.3 | 35.8 | 37.2 | 30.9 | 108 | 1913 2025 |
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Highest temperature (°C) | 47.0 | 46.1 | 44.6 | 40.0 | 36.4 | 33.3 | 33.4 | 37.7 | 41.0 | 43.6 | 46.0 | 46.6 | 47.0 | 65 | 1957 2025 |
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Date | 04 Jan 1973 | 13 Feb 2017 | 20 Mar 2015 | 12 Apr 2003 | 04 May 2007 | 01 Jun 1962 | 31 Jul 2021 | 31 Aug 2024 | 27 Sep 2017 | 27 Oct 2018 | 30 Nov 2006 | 30 Dec 2013 | 04 Jan 1973 | ||||
Lowest maximum temperature (°C) | 22.5 | 21.3 | 21.8 | 15.4 | 13.3 | 11.6 | 10.2 | 14.1 | 15.6 | 19.1 | 19.6 | 20.0 | 10.2 | 65 | 1957 2025 |
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Date | 16 Jan 1981 | 06 Feb 1979 | 10 Mar 1977 | 26 Apr 1983 | 22 May 1959 | 09 Jun 2011 | 15 Jul 2016 | 08 Aug 1996 | 18 Sep 2010 | 08 Oct 2010 | 26 Nov 1999 | 21 Dec 1976 | 15 Jul 2016 | ||||
Decile 1 maximum temperature (°C) | 32.0 | 31.7 | 30.6 | 27.0 | 22.1 | 19.1 | 18.7 | 21.1 | 24.8 | 28.8 | 31.0 | 32.2 | 58 | 1957 2025 |
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Decile 9 maximum temperature(°C) | 41.5 | 40.1 | 38.3 | 35.0 | 30.4 | 27.5 | 27.5 | 30.3 | 34.7 | 38.2 | 40.3 | 41.7 | 58 | 1957 2025 |
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Mean number of days ≥ 30 °C | 25.5 | 23.7 | 25.2 | 17.9 | 3.9 | 0.3 | 0.4 | 3.4 | 13.9 | 23.4 | 25.0 | 25.6 | 188.2 | 65 | 1957 2025 |
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Mean number of days ≥ 35 °C | 20.5 | 16.9 | 13.7 | 2.7 | 0.1 | 0.0 | 0.0 | 0.1 | 2.4 | 10.7 | 17.3 | 20.0 | 104.4 | 65 | 1957 2025 |
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Mean number of days ≥ 40 °C | 6.5 | 3.1 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.1 | 3.7 | 6.5 | 22.0 | 65 | 1957 2025 |
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Minimum temperature | |||||||||||||||||
Mean minimum temperature (°C) | 23.2 | 22.5 | 20.5 | 16.1 | 11.3 | 7.9 | 6.7 | 8.1 | 12.2 | 16.8 | 20.0 | 22.1 | 15.6 | 108 | 1913 2025 |
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Lowest temperature (°C) | 14.7 | 13.6 | 4.0 | 3.9 | 1.4 | -1.4 | -1.7 | -2.0 | 1.6 | 5.0 | 7.0 | 8.4 | -2.0 | 65 | 1957 2025 |
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Date | 09 Jan 1961 | 03 Feb 2013 | 26 Mar 2004 | 29 Apr 1999 | 29 May 2000 | 28 Jun 1971 | 26 Jul 1968 | 17 Aug 1974 | 16 Sep 1975 | 08 Oct 1994 | 04 Nov 1974 | 08 Dec 1975 | 17 Aug 1974 | ||||
Highest minimum temperature (°C) | 32.2 | 31.9 | 29.4 | 27.0 | 22.8 | 19.1 | 19.7 | 20.6 | 24.8 | 29.6 | 30.4 | 33.1 | 33.1 | 65 | 1957 2025 |
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Date | 29 Jan 1963 | 13 Feb 2018 | 03 Mar 2015 | 13 Apr 2003 | 15 May 1958 | 01 Jun 1998 | 21 Jul 2016 | 29 Aug 2009 | 30 Sep 1988 | 27 Oct 2004 | 20 Nov 2003 | 03 Dec 2020 | 03 Dec 2020 | ||||
Decile 1 minimum temperature (°C) | 19.8 | 19.2 | 17.0 | 12.2 | 6.3 | 2.8 | 1.8 | 3.3 | 6.6 | 11.5 | 15.6 | 17.9 | 58 | 1957 2025 |
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Decile 9 minimum temperature (°C) | 27.3 | 26.1 | 24.3 | 20.8 | 16.9 | 13.5 | 12.7 | 14.1 | 18.4 | 21.9 | 24.8 | 26.1 | 58 | 1957 2025 |
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Mean number of days ≤ 2 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.6 | 3.0 | 1.1 | 0.0 | 0.0 | 0.0 | 0.0 | 5.7 | 65 | 1957 2025 |
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Mean number of days ≤ 0 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.7 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 1.1 | 65 | 1957 2025 |
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Ground surface temperature | |||||||||||||||||
Mean daily ground minimum temperature (°C) | |
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Lowest ground temperature (°C) | |
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Mean number of days ground min. temp. ≤ -1 °C | 0 | 2010 2010 |
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Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
Rainfall | |||||||||||||||||
Mean rainfall (mm) | 69.8 | 71.4 | 61.7 | 35.7 | 27.4 | 20.7 | 20.5 | 12.2 | 15.5 | 27.4 | 36.1 | 52.6 | 450.6 | 140 | 1885 2025 |
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Highest rainfall (mm) | 353.3 | 334.8 | 330.7 | 455.4 | 274.0 | 156.2 | 156.8 | 140.7 | 134.3 | 141.7 | 227.7 | 179.9 | 1309.1 | 140 | 1885 2025 |
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Date | 1891 | 1940 | 1890 | 1891 | 1989 | 2016 | 1920 | 1886 | 2010 | 1920 | 2010 | 1971 | 1950 | ||||
Lowest rainfall (mm) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 125.3 | 140 | 1885 2025 |
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Date | 1935 | 1941 | 1998 | 2017 | 2024 | 2023 | 2020 | 2019 | 2023 | 2023 | 2006 | 2019 | 1938 | ||||
Decile 1 rainfall (mm) | 8.6 | 4.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | 6.0 | 141 | n/a n/a |
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Decile 5 (median) rainfall (mm) | 46.8 | 49.8 | 30.9 | 14.7 | 13.2 | 10.2 | 8.3 | 6.0 | 3.8 | 16.4 | 19.2 | 41.9 | 141 | n/a n/a |
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Decile 9 rainfall (mm) | 171.5 | 168.5 | 191.3 | 84.6 | 74.5 | 63.7 | 58.0 | 27.9 | 51.9 | 64.9 | 87.4 | 122.4 | 141 | n/a n/a |
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Highest daily rainfall (mm) | 203.7 | 133.1 | 146.4 | 166.6 | 124.2 | 99.8 | 68.8 | 59.2 | 72.4 | 123.2 | 98.6 | 132.3 | 203.7 | 138 | 1885 2025 |
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Date | 18 Jan 1950 | 23 Feb 1955 | 27 Mar 2019 | 03 Apr 1891 | 22 May 1990 | 04 Jun 1923 | 25 Jul 1950 | 30 Aug 1903 | 16 Sep 1903 | 21 Oct 1920 | 28 Nov 2010 | 26 Dec 1971 | 18 Jan 1950 | ||||
Mean number of days of rain | 5.9 | 5.4 | 4.6 | 2.5 | 2.6 | 2.3 | 2.2 | 1.7 | 2.0 | 3.3 | 4.2 | 5.0 | 41.7 | 139 | 1885 2025 |
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Mean number of days of rain ≥ 1 mm | 5.2 | 4.6 | 4.0 | 2.1 | 2.2 | 1.9 | 1.8 | 1.4 | 1.6 | 2.8 | 3.5 | 4.3 | 35.4 | 138 | 1885 2025 |
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Mean number of days of rain ≥ 10 mm | 1.9 | 1.8 | 1.8 | 0.9 | 0.8 | 0.6 | 0.7 | 0.4 | 0.4 | 0.8 | 1.0 | 1.6 | 12.7 | 138 | 1885 2025 |
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Mean number of days of rain ≥ 25 mm | 0.8 | 0.8 | 0.7 | 0.4 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.3 | 0.4 | 0.5 | 4.7 | 138 | 1885 2025 |
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Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
Other daily elements | |||||||||||||||||
Mean daily wind run (km) | |
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Maximum wind gust speed (km/h) | |
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Mean daily sunshine (hours) | |
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Mean daily solar exposure (MJ/m2) | 26.3 | 25.0 | 22.5 | 19.4 | 16.0 | 14.5 | 15.5 | 18.5 | 21.9 | 25.1 | 26.2 | 27.0 | 21.5 | 35 | 1990 2025 |
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Mean number of clear days | 7.5 | 7.8 | 10.1 | 10.6 | 13.0 | 13.6 | 15.8 | 17.0 | 17.1 | 14.9 | 11.4 | 9.2 | 148.0 | 47 | 1957 2010 |
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Mean number of cloudy days | 6.0 | 5.0 | 4.1 | 3.2 | 4.5 | 3.5 | 2.8 | 1.9 | 2.1 | 3.0 | 4.0 | 4.3 | 44.4 | 47 | 1957 2010 |
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Mean daily evaporation (mm) | |
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Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
9 am conditions | |||||||||||||||||
Mean 9am temperature (°C) | 29.4 | 28.3 | 26.6 | 22.9 | 17.9 | 14.1 | 13.3 | 16.1 | 21.0 | 25.3 | 28.2 | 29.5 | 22.7 | 92 | 1913 2010 |
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Mean 9am wet-bulb temperature (°C) | 21.9 | 21.8 | 20.1 | 16.8 | 13.2 | 10.5 | 9.4 | 10.8 | 14.0 | 16.9 | 19.1 | 20.9 | 16.3 | 84 | 1913 2010 |
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Mean 9am dew-point temperature (°C) | 17.6 | 18.0 | 15.2 | 12.0 | 9.1 | 6.5 | 4.5 | 4.5 | 6.4 | 9.2 | 11.8 | 14.7 | 10.8 | 43 | 1957 2010 |
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Mean 9am relative humidity (%) | 52 | 57 | 53 | 52 | 57 | 62 | 57 | 48 | 41 | 39 | 39 | 43 | 50 | 62 | 1938 2010 |
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Mean 9am cloud cover (oktas) | 2.5 | 2.5 | 1.9 | 1.6 | 1.9 | 1.9 | 1.5 | 1.2 | 1.3 | 1.5 | 1.7 | 2.0 | 1.8 | 94 | 1913 2010 |
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Mean 9am wind speed (km/h) | 11.1 | 10.4 | 9.9 | 10.2 | 9.4 | 9.0 | 9.2 | 12.1 | 14.8 | 14.4 | 13.7 | 12.2 | 11.4 | 42 | 1957 2010 |
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9am wind speed vs direction plot | ![]() |
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Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
3 pm conditions | |||||||||||||||||
Mean 3pm temperature (°C) | 35.4 | 34.3 | 33.1 | 29.7 | 25.3 | 22.2 | 21.8 | 24.2 | 28.3 | 31.9 | 34.6 | 35.5 | 29.7 | 84 | 1913 2010 |
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Mean 3pm wet-bulb temperature (°C) | 22.8 | 22.9 | 21.6 | 19.1 | 16.2 | 14.2 | 13.4 | 14.6 | 16.7 | 18.8 | 20.5 | 22.1 | 18.6 | 79 | 1913 2010 |
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Mean 3pm dew-point temperature (°C) | 15.1 | 16.2 | 13.3 | 10.8 | 7.9 | 5.8 | 3.4 | 3.0 | 4.0 | 6.6 | 8.9 | 12.0 | 8.9 | 42 | 1957 2010 |
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Mean 3pm relative humidity (%) | 34 | 38 | 34 | 33 | 35 | 36 | 32 | 27 | 24 | 25 | 24 | 28 | 31 | 59 | 1938 2010 |
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Mean 3pm cloud cover (oktas) | 4.1 | 4.1 | 3.7 | 2.9 | 2.7 | 2.4 | 1.8 | 1.5 | 1.7 | 2.5 | 3.2 | 3.8 | 2.9 | 89 | 1913 2010 |
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Mean 3pm wind speed (km/h) | 9.4 | 9.2 | 8.9 | 9.0 | 8.9 | 9.8 | 10.8 | 11.7 | 11.5 | 11.4 | 11.2 | 10.4 | 10.2 | 36 | 1957 2010 |
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3pm wind speed vs direction plot | ![]() |
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Monthly statistics are only included if there are more than 10 years of data. The number of years (provided in the 2nd last column of the table) may differ between elements if the observing program at the site changed. More detailed data for individual sites can be obtained by contacting the Bureau.