Casterton Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
27.0 27.3 24.6 20.5 16.7 14.2 13.4 14.6 16.4 18.9 21.8 24.3 19.9
Mean Min (°C)
11.8 12.0 10.8 8.8 7.2 5.6 5.0 5.5 6.5 7.3 8.8 10.4 8.3
Mean Rain (mm)
30.7 23.0 34.8 43.6 62.6 68.6 86.3 84.8 73.1 57.2 46.7 41.4 652.1
Median Rain (mm)
20.4 18.8 29.6 31.5 57.2 61.5 81.6 79.6 75.5 51.5 43.1 34.0 636.0
Mean Rain Days
7.9 6.1 10.3 13.7 19.3 20.2 22.5 22.1 19.3 16.2 11.9 11.3 180.4

Casterton Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.3 43.7 40.4 35.0 29.0 22.8 22.5 25.0 32.1 35.2 40.0 43.0 44.3
Low Max (°C)
14.6 14.8 14.5 9.3 8.3 6.5 6.8 8.1 9.3 8.3 11.5 13.0 6.5
High Min (°C)
27.8 26.3 24.5 22.5 16.5 14.5 12.0 13.7 17.5 20.6 23.0 23.0 27.8
Low Min (°C)
2.6 0.4 1.5 -2.4 -1.8 -4.0 -4.6 -3.5 -2.0 -1.7 -0.8 0.4 -4.6
High Rain (mm)
114.0 49.0 83.2 59.4 48.0 45.4 39.0 38.8 53.0 44.0 73.6 86.0 114.0

Casterton Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
31.1 31.6 28.2 23.9 18.3 17.0 15.1 16.5 18.5 21.9 27.5 27.7 21.0
Low Mn. Max (°C)
22.9 24.0 22.2 17.6 13.8 12.6 12.2 12.7 14.2 16.2 18.8 19.4 18.8
High Mn. Min (°C)
14.7 15.2 14.5 12.0 10.7 8.1 6.9 7.2 8.2 9.3 11.9 13.0 9.3
Low Mn. Min (°C)
8.0 9.3 8.8 5.7 5.3 1.7 2.3 3.5 4.6 5.1 6.8 8.2 7.5
High Rain (mm)
159.4 94.8 118.8 130.5 158.4 158.2 186.6 164.7 143.4 147.2 126.4 149.4 899.3
Low Rain (mm)
1.0 0.2 3.6 5.0 8.2 9.7 22.6 12.6 27.7 13.2 10.4 3.9 369.5

Casterton Annual Temperatures & Rainfall

Casterton annual climate

Casterton Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.8 0.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.6
≥ 35°C
3.9 3.7 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.9 11.4
≥ 30°C
9.3 9.4 5.8 1.1 0.0 0.0 0.0 0.0 0.1 0.5 2.9 5.8 34.8
≤ 2°C
0.0 0.0 0.1 0.9 2.7 5.3 5.9 4.3 2.7 2.2 0.7 0.0 24.7
≤ 0°C
0.0 0.0 0.0 0.2 0.7 2.7 3.1 1.5 0.6 0.4 0.1 0.0 9.3

Casterton 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
34.5 34.7 31.4 25.8 19.9 16.1 15.3 17.0 19.8 23.8 28.2 31.6 27.5
Low Max
20.8 21.0 19.2 16.1 13.8 12.0 11.4 12.2 13.4 15.0 16.5 18.4 13.6
High Min
15.5 15.6 14.8 12.6 10.8 9.0 8.2 8.5 9.9 11.0 12.6 14.0 12.8
Low Min
7.7 8.1 6.9 4.7 3.0 1.4 1.0 2.0 2.9 3.5 4.9 6.5 3.9

Casterton Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
55 54 54 54 54 54 54 54 54 53 54 54 54.0
Earliest Entry
1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957
Latest Entry
2011 2011 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2011
Years of Maxima
54 54 54 54 54 54 54 54 54 54 54 54 54.0
Earliest Entry
1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1957
Latest Entry
2011 2011 2010 2010 2010 2010 2010 2010 2010 2010 2010 2010 2011
Years of Rainfall
62 61 61 61 61 61 61 60 61 60 61 62 61.0
Earliest Entry
1957 1957 1957 1957 1957 1957 1957 1957 1957 1957 1956 1956 1956
Latest Entry
2018 2018 2018 2018 2018 2017 2017 2017 2017 2017 2017 2017 2018

Station Details

CASTERTON SHOWGROUNDS
South West, Victoria
37.5908°S 141.4129°E 71m AMSL
Commenced 1956

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