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Risdon Long-term Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Max (°C) |
22.4 | 22.1 | 20.6 | 17.8 | 14.4 | 12.3 | 11.7 | 12.8 | 14.9 | 17.1 | 18.4 | 20.5 | 17.0 |
| Mean Min (°C) |
12.1 | 12.3 | 11.3 | 9.4 | 6.9 | 5.4 | 4.5 | 5.0 | 6.6 | 8.0 | 9.6 | 11.1 | 8.5 |
| Mean Rain (mm) |
43.3 | 45.1 | 45.4 | 52.3 | 48.7 | 52.2 | 47.9 | 51.3 | 44.0 | 60.3 | 54.6 | 56.4 | 601.2 |
| Median Rain (mm) |
31.6 | 31.6 | 36.4 | 44.4 | 41.0 | 39.2 | 42.1 | 39.6 | 37.7 | 47.1 | 45.1 | 47.6 | 579.9 |
| Mean Rain Days |
9.4 | 8.9 | 9.9 | 12.1 | 14.2 | 14.8 | 15.9 | 16.0 | 14.4 | 15.6 | 14.1 | 12.2 | 156.2 |
Risdon Daily Records
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Max (°C) |
40.2 | 37.5 | 35.3 | 30.6 | 24.7 | 20.3 | 20.0 | 24.0 | 28.0 | 30.6 | 35.3 | 36.7 | 40.2 |
| Low Max (°C) |
13.9 | 10.8 | 11.7 | 9.2 | 6.1 | 4.4 | 5.5 | 5.8 | 6.7 | 5.3 | 9.6 | 11.1 | 4.4 |
| High Min (°C) |
25.6 | 23.5 | 20.5 | 18.9 | 14.0 | 13.5 | 14.0 | 11.5 | 19.0 | 17.5 | 18.5 | 22.0 | 25.6 |
| Low Min (°C) |
-1.1 | 0.0 | 2.8 | -1.1 | -0.6 | -1.1 | -5.0 | -0.8 | -3.3 | -2.8 | -6.7 | -3.9 | -6.7 |
| High Rain (mm) |
54.9 | 58.4 | 68.6 | 118.6 | 52.3 | 119.4 | 69.9 | 63.0 | 75.7 | 55.9 | 69.1 | 65.0 | 119.4 |
Risdon Monthly Records
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Mn. Max (°C) |
24.8 | 24.2 | 23.9 | 19.4 | 16.9 | 14.2 | 13.0 | 15.1 | 17.4 | 20.5 | 20.9 | 23.4 | 17.7 |
| Low Mn. Max (°C) |
19.8 | 18.9 | 18.6 | 15.7 | 12.6 | 10.6 | 10.4 | 11.1 | 13.3 | 14.3 | 16.7 | 17.6 | 16.1 |
| High Mn. Min (°C) |
14.4 | 13.9 | 13.8 | 11.5 | 9.3 | 7.3 | 6.0 | 6.3 | 10.0 | 10.4 | 12.2 | 14.0 | 9.3 |
| Low Mn. Min (°C) |
10.0 | 10.4 | 9.7 | 7.7 | 5.0 | 3.8 | 2.8 | 3.4 | 5.4 | 5.9 | 8.2 | 9.2 | 7.7 |
| High Rain (mm) |
112.0 | 150.2 | 189.1 | 264.9 | 179.2 | 205.6 | 155.6 | 213.0 | 117.9 | 159.2 | 151.7 | 149.6 | 883.4 |
| Low Rain (mm) |
5.4 | 5.9 | 9.3 | 0.8 | 4.0 | 10.5 | 7.6 | 11.3 | 9.4 | 18.7 | 11.7 | 3.2 | 365.3 |
Risdon Annual Temperatures & Rainfall
Risdon Average Number of Days With Temperatures
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥ 40°C |
0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| ≥ 35°C |
0.8 | 0.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.3 |
| ≥ 30°C |
2.8 | 2.0 | 1.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.4 | 1.2 | 7.0 |
| ≤ 2°C |
0.1 | 0.1 | 0.0 | 0.4 | 1.2 | 3.2 | 5.5 | 3.3 | 0.9 | 0.7 | 0.1 | 0.1 | 13.6 |
| ≤ 0°C |
0.1 | 0.1 | 0.0 | 0.2 | 0.4 | 0.5 | 1.3 | 0.6 | 0.2 | 0.3 | 0.1 | 0.1 | 3.3 |
Risdon 'per Week' Values (14th/86th Percentiles)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Max |
27.6 | 26.7 | 25.5 | 21.4 | 17.5 | 15.3 | 14.2 | 15.6 | 18.0 | 21.7 | 22.8 | 25.0 | 22.5 |
| Low Max |
17.8 | 17.8 | 16.5 | 14.4 | 11.5 | 9.4 | 8.9 | 10.0 | 11.5 | 12.8 | 14.0 | 16.1 | 11.5 |
| High Min |
15.0 | 15.0 | 14.0 | 12.5 | 10.0 | 8.5 | 7.2 | 7.8 | 9.0 | 10.9 | 12.2 | 14.2 | 12.5 |
| Low Min |
9.4 | 9.4 | 8.1 | 6.5 | 4.0 | 2.5 | 1.7 | 2.5 | 3.9 | 5.0 | 6.7 | 8.3 | 4.1 |
Risdon Data Availability
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Years of Minima |
20 | 17 | 18 | 20 | 18 | 19 | 20 | 19 | 20 | 20 | 20 | 19 | 19.0 |
| Earliest Entry |
1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 |
| Latest Entry |
1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1977 | 1977 | 1977 | 1978 |
| Years of Maxima |
21 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 21 | 21 | 20 | 20.7 |
| Earliest Entry |
1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 | 1957 |
| Latest Entry |
1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1977 | 1977 | 1977 | 1978 |
| Years of Rainfall |
55 | 55 | 56 | 55 | 56 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 55.5 |
| Earliest Entry |
1924 | 1924 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 | 1923 |
| Latest Entry |
1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1978 | 1977 | 1977 | 1977 | 1978 |
Station Details
RISDON
Lower Derwent, Tasmania
Lower Derwent, Tasmania
42.8333°S 147.3167°E
32m AMSL
Commenced 1923 / Closed 1978
Commenced 1923 / Closed 1978
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