Northam Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
34.3 33.7 30.7 26.1 21.3 18.0 17.0 18.0 20.6 24.2 28.6 32.2 25.4
Mean Min (°C)
17.2 17.3 15.5 12.0 8.4 6.5 5.4 5.7 6.9 9.0 12.5 15.4 10.9
Mean Rain (mm)
12.1 14.2 19.4 23.3 54.9 77.1 81.7 60.0 35.4 24.5 12.7 8.7 429.3
Median Rain (mm)
1.2 3.5 7.6 17.3 50.9 73.8 71.6 56.2 33.0 19.9 8.8 2.8 416.8
Mean Rain Days
1.9 2.2 3.1 5.5 10.4 14.2 16.1 13.8 10.8 7.1 4.0 2.3 92.2

Northam Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
46.3 48.1 43.9 39.5 35.2 27.2 25.2 29.7 34.7 40.0 44.1 45.6 48.1
Low Max (°C)
17.4 15.7 15.4 13.8 10.0 10.0 10.0 8.9 8.3 12.2 13.2 16.1 8.3
High Min (°C)
28.9 29.8 27.3 24.4 20.0 16.1 15.6 14.7 16.7 21.7 25.6 26.6 29.8
Low Min (°C)
7.3 7.9 4.9 0.6 -2.3 -3.9 -3.2 -1.7 -1.4 -0.3 2.1 4.5 -3.9
High Rain (mm)
101.6 115.6 126.2 74.7 68.5 67.1 53.8 36.3 33.6 59.8 34.3 49.5 126.2

Northam Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
37.9 38.2 34.4 29.5 24.5 20.9 19.1 21.0 24.7 29.0 32.9 36.8 27.6
Low Mn. Max (°C)
30.2 30.3 25.9 22.1 18.7 15.3 14.8 15.9 17.6 20.8 24.2 28.3 23.4
High Mn. Min (°C)
19.9 20.8 18.0 15.2 12.1 10.4 8.6 8.7 10.1 12.4 15.6 18.4 12.8
Low Mn. Min (°C)
15.0 15.2 12.5 9.1 4.8 2.8 1.9 2.3 4.1 6.4 9.7 11.4 9.7
High Rain (mm)
135.4 189.8 188.9 99.2 148.3 232.9 221.3 170.0 102.4 89.1 85.7 65.8 710.9
Low Rain (mm)
0.0 0.0 0.0 0.0 1.0 5.6 13.6 3.1 2.6 0.0 0.0 0.0 194.1

Northam Annual Temperatures & Rainfall

Northam annual climate

Northam Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
3.9 2.9 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.0 9.8
≥ 35°C
14.1 11.5 6.5 0.8 0.0 0.0 0.0 0.0 0.0 0.6 3.9 9.4 46.7
≥ 30°C
25.0 21.9 16.9 5.9 0.5 0.0 0.0 0.0 0.5 3.7 11.6 20.7 106.7
≤ 2°C
0.0 0.0 0.0 0.1 1.0 3.6 5.7 4.5 1.8 0.3 0.0 0.0 17.0
≤ 0°C
0.0 0.0 0.0 0.0 0.2 0.8 1.7 0.8 0.2 0.0 0.0 0.0 3.9

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
39.5 39.1 36.2 31.1 25.0 20.6 19.2 20.7 24.3 29.2 34.4 37.8 34.4
Low Max
28.9 28.4 25.6 21.5 17.8 15.3 14.5 15.2 17.1 19.4 23.0 26.5 17.2
High Min
20.6 20.6 19.0 15.8 12.8 10.6 9.4 9.4 10.6 12.5 16.0 18.8 17.2
Low Min
13.9 13.9 11.8 8.3 4.4 2.3 1.6 2.0 3.3 5.1 8.9 11.9 4.5

Northam Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
117 117 113 114 111 114 114 113 113 112 114 116 114.0
Earliest Entry
1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Maxima
116 117 114 115 113 114 112 112 113 112 114 115 113.0
Earliest Entry
1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907 1907
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Rainfall
130 128 123 120 117 117 117 116 117 119 122 125 117.0
Earliest Entry
1877 1877 1877 1891 1907 1907 1907 1907 1907 1877 1877 1877 1877
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024

Station Details

NORTHAM
Central Wheatbelt, Western Australia
31.6508°S 116.6586°E 170m AMSL
Commenced 1877

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Winter is Coming: Chilly day for Sydney, rain pelts eastern seaboard

17:22 AEST Just as we forecast yesterday, a coastal trough has deepened along the NSW and southeast Qld coasts as a low in the Coral Sea continues to inch closer to Qld.  The trough has brought some interesting weather to NSW in the past 36 hours or so, particularly along the coastal fringe, giving those New South Welshmen a “Stark” Game of Thrones reminder: winter is coming.

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