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Derby Long-term Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Max (°C) |
35.2 | 34.7 | 35.4 | 35.7 | 33.0 | 30.7 | 30.9 | 32.9 | 35.7 | 37.4 | 38.2 | 37.4 | 34.8 |
| Mean Min (°C) |
25.8 | 25.5 | 25.1 | 22.9 | 18.8 | 15.7 | 14.6 | 15.8 | 19.4 | 23.2 | 25.6 | 26.3 | 21.5 |
| Mean Rain (mm) |
214.7 | 199.9 | 138.0 | 21.8 | 18.3 | 7.0 | 5.9 | 1.1 | 1.8 | 3.5 | 14.8 | 84.1 | 700.8 |
| Median Rain (mm) |
163.3 | 177.3 | 73.3 | 5.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.3 | 46.3 | 656.2 |
| Mean Rain Days |
13.5 | 12.4 | 10.1 | 2.9 | 1.7 | 1.0 | 0.6 | 0.2 | 0.2 | 1.0 | 2.1 | 7.7 | 53.4 |
Derby Daily Records
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Max (°C) |
44.0 | 43.8 | 41.9 | 41.5 | 40.3 | 36.6 | 36.2 | 40.7 | 42.7 | 44.8 | 44.6 | 45.6 | 45.6 |
| Low Max (°C) |
26.0 | 25.1 | 26.6 | -1.0 | 19.1 | 19.6 | 20.3 | 20.6 | 21.2 | 29.4 | 28.3 | 26.2 | -1.0 |
| High Min (°C) |
30.4 | 29.8 | 29.5 | 28.7 | 27.4 | 25.0 | 23.7 | 24.5 | 29.0 | 29.2 | 29.6 | 30.9 | 30.9 |
| Low Min (°C) |
19.2 | 19.2 | 19.3 | 13.7 | 8.2 | 6.1 | 6.0 | 6.1 | 9.1 | 11.7 | 18.5 | 18.5 | 6.0 |
| High Rain (mm) |
294.4 | 255.3 | 159.0 | 79.8 | 105.0 | 39.8 | 78.6 | 21.4 | 28.6 | 55.6 | 115.0 | 150.4 | 294.4 |
Derby Monthly Records
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Mn. Max (°C) |
38.2 | 38.7 | 38.0 | 38.9 | 35.7 | 33.3 | 32.8 | 34.9 | 37.7 | 39.3 | 39.7 | 40.6 | 36.3 |
| Low Mn. Max (°C) |
31.7 | 32.0 | 32.5 | 32.3 | 29.6 | 28.0 | 27.8 | 30.3 | 32.8 | 35.4 | 36.0 | 34.4 | 33.3 |
| High Mn. Min (°C) |
27.8 | 27.4 | 27.1 | 24.9 | 21.9 | 19.9 | 18.4 | 20.2 | 23.3 | 25.8 | 27.2 | 27.6 | 23.4 |
| Low Mn. Min (°C) |
24.3 | 24.1 | 23.6 | 20.7 | 15.0 | 11.9 | 11.2 | 11.9 | 16.6 | 20.8 | 23.0 | 25.4 | 19.9 |
| High Rain (mm) |
703.2 | 445.4 | 689.2 | 165.0 | 132.0 | 88.6 | 153.0 | 23.6 | 40.4 | 56.4 | 206.0 | 436.8 | 1250.2 |
| Low Rain (mm) |
8.5 | 16.1 | 5.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 78.7 |
Derby Annual Temperatures & Rainfall
Derby Average Number of Days With Temperatures
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥ 40°C |
1.2 | 0.9 | 0.6 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 4.1 | 6.1 | 4.9 | 18.6 |
| ≥ 35°C |
17.8 | 13.1 | 18.4 | 20.3 | 7.5 | 0.5 | 0.6 | 5.0 | 19.0 | 26.3 | 28.1 | 25.8 | 180.6 |
| ≥ 30°C |
28.7 | 26.4 | 29.8 | 29.0 | 27.3 | 19.5 | 21.4 | 28.3 | 29.3 | 30.6 | 29.7 | 30.0 | 327.2 |
| ≤ 2°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 |
| ≤ 0°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 |
Derby 'per Week' Values (14th/86th Percentiles)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High Max |
38.2 | 37.6 | 37.8 | 37.5 | 35.5 | 32.8 | 32.8 | 34.8 | 37.8 | 39.4 | 40.2 | 39.7 | 38.1 |
| Low Max |
32.0 | 31.5 | 32.5 | 33.7 | 30.4 | 28.0 | 28.4 | 30.5 | 32.6 | 34.5 | 35.9 | 34.2 | 30.8 |
| High Min |
27.8 | 27.2 | 26.6 | 25.5 | 22.5 | 19.5 | 18.6 | 19.6 | 22.6 | 25.6 | 27.3 | 28.1 | 26.5 |
| Low Min |
23.6 | 23.7 | 23.2 | 19.7 | 15.2 | 11.7 | 11.0 | 12.8 | 16.7 | 20.4 | 23.5 | 24.1 | 15.5 |
Derby Data Availability
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Ann | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Years of Minima |
38 | 40 | 38 | 38 | 40 | 38 | 40 | 40 | 40 | 39 | 38 | 39 | 39.0 |
| Earliest Entry |
1973 | 1973 | 1973 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 |
| Latest Entry |
2025 | 2025 | 2025 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2025 |
| Years of Maxima |
39 | 40 | 38 | 38 | 40 | 38 | 40 | 40 | 40 | 39 | 38 | 39 | 39.0 |
| Earliest Entry |
1973 | 1973 | 1973 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 | 1972 |
| Latest Entry |
2025 | 2025 | 2025 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2025 |
| Years of Rainfall |
64 | 64 | 62 | 63 | 65 | 64 | 67 | 68 | 68 | 65 | 63 | 64 | 62.0 |
| Earliest Entry |
1952 | 1952 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 | 1951 |
| Latest Entry |
2025 | 2025 | 2025 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2024 | 2025 |
Station Details
DERBY AERO
Kimberley, Western Australia
Kimberley, Western Australia
17.3706°S 123.6611°E
7m AMSL
Commenced 1951
Commenced 1951
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