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Derby Ap Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
35.2 34.3 35.1 35.5 32.7 30.3 30.6 32.6 35.3 37.1 38.0 37.1 34.5
Mean Min (°C)
25.7 25.4 25.0 22.8 18.8 15.6 14.7 15.9 19.5 23.0 25.4 26.2 21.4
Mean Rain (mm)
206.2 211.2 145.8 21.2 18.6 7.3 6.0 0.8 1.1 2.5 10.8 72.8 679.4
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
13.1 12.6 10.1 2.9 1.6 1.1 0.6 0.2 0.1 0.9 2.0 7.3 46.1

Derby Ap Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.0 43.8 41.8 40.3 39.2 36.6 35.9 38.6 42.1 43.7 44.6 44.9 44.9
Low Max (°C)
26.0 25.8 26.6 22.0 19.1 19.6 20.3 20.6 21.2 29.4 28.3 26.4 19.1
High Min (°C)
30.3 29.4 29.1 28.1 26.7 24.8 23.6 24.5 27.4 28.6 29.1 30.9 30.9
Low Min (°C)
20.2 19.2 19.3 13.7 9.1 6.1 6.0 7.0 9.1 11.7 19.8 18.5 6.0
High Rain (mm)
294.4 255.3 159.0 66.0 105.0 39.8 78.6 19.0 27.4 17.3 38.0 126.8 294.4

Derby Ap Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
38.2 38.6 38.0 37.7 34.9 32.3 31.9 34.5 37.4 39.0 39.5 39.3 35.6
Low Mn. Max (°C)
31.7 32.0 32.5 32.3 29.6 28.0 27.8 30.3 32.8 35.4 36.2 34.7 33.3
High Mn. Min (°C)
26.8 26.8 26.2 24.9 21.9 18.6 18.4 20.2 21.9 25.8 26.7 27.2 22.9
Low Mn. Min (°C)
24.4 24.1 23.6 20.7 15.0 11.9 11.2 12.0 16.6 20.8 23.0 25.4 19.9
High Rain (mm)
703.2 445.4 689.2 93.6 132.0 88.6 153.0 19.2 40.4 26.6 74.4 233.4 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 Ap Annual Temperatures & Rainfall

DERBY AERO

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Derby Ap Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
1.0 0.5 0.3 0.0 0.0 0.0 0.0 0.0 0.7 3.4 5.3 4.0 15.1
≥ 35°C
17.6 11.1 17.1 19.0 6.2 0.3 0.4 3.9 16.7 25.3 27.7 25.2 168.0
≥ 30°C
28.3 26.0 29.2 28.4 27.0 17.8 20.2 28.1 29.1 30.3 29.3 30.0 319.9
≤ 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 Ap '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 Ap Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
26 27 27 28 29 28 29 29 29 28 28 27 27.9
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013
Years of Maxima
27 27 27 28 29 28 29 29 29 28 28 28 28.1
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013
Years of Rainfall
52 52 52 53 54 55 56 57 57 55 53 53 53.8
Earliest Entry
1952 1952 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013

Station Details

DERBY AERO
Kimberley, Western Australia
17.3706°S 123.6611°E 6m AMSL
Commenced 1951

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