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 34.7
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)
214.2 201.7 138.0 21.8 18.3 7.0 5.9 1.1 1.8 3.5 14.0 82.8 703.0
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 2.0 7.6 53.2

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 annual climate

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 18.0
≥ 35°C
17.7 13.1 18.4 20.3 7.5 0.5 0.6 5.0 19.0 26.3 28.1 25.7 179.2
≥ 30°C
28.7 26.4 29.8 29.0 27.3 19.5 21.4 28.3 29.3 30.6 29.7 30.0 326.6
≤ 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
37 39 38 38 40 38 40 40 40 39 37 38 38.0
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2024
Years of Maxima
38 39 38 38 40 38 40 40 40 39 37 38 38.0
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2024
Years of Rainfall
63 63 62 63 65 64 67 68 68 65 62 63 61.0
Earliest Entry
1952 1952 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2024

Station Details

DERBY AERO
Kimberley, Western Australia
17.3706°S 123.6611°E 7m AMSL
Commenced 1951

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