Shannon Climate

Shannon Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
26.3 26.8 24.6 21.3 18.2 15.8 14.8 15.4 16.5 18.8 22.0 24.6 20.4
Mean Min (°C)
12.6 13.5 12.6 10.8 8.9 7.6 6.6 6.9 7.3 8.4 10.0 11.3 9.7
Mean Rain (mm)
19.9 17.3 34.5 67.5 123.5 153.1 177.7 150.2 120.8 73.4 51.1 33.5 1022.9
Median Rain (mm)
10.8 10.8 19.4 43.4 116.4 150.6 143.6 150.9 132.8 63.2 45.4 15.5 994.4
Mean Rain Days
8.3 7.2 9.6 16.0 20.6 21.5 23.5 23.0 20.6 17.2 13.5 9.9 190.6

Shannon Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
41.0 39.2 41.0 33.1 29.0 22.3 21.0 24.8 28.0 30.4 38.0 41.0 41.0
Low Max (°C)
15.7 16.3 11.0 10.9 9.6 8.8 9.5 8.0 10.0 11.0 13.0 15.0 8.0
High Min (°C)
21.0 24.0 23.0 19.0 19.0 14.0 13.9 13.8 15.5 16.5 20.0 21.0 24.0
Low Min (°C)
4.0 6.0 3.0 2.0 0.0 -2.0 -1.0 0.0 0.3 1.0 1.0 3.0 -2.0
High Rain (mm)
27.0 31.0 35.0 62.0 80.0 46.0 47.0 36.0 38.0 50.0 39.0 42.6 80.0

Shannon Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
27.9 28.5 26.9 24.6 19.9 16.9 16.0 17.5 18.1 22.1 24.5 29.4 21.1
Low Mn. Max (°C)
24.1 24.9 22.1 18.6 16.4 14.6 13.7 14.0 14.3 16.4 18.7 20.9 19.3
High Mn. Min (°C)
15.4 15.4 14.7 12.1 11.6 9.1 7.7 8.3 8.3 10.3 12.2 13.2 10.4
Low Mn. Min (°C)
11.4 11.9 10.9 8.6 7.4 5.0 5.1 5.3 5.7 6.8 8.4 9.5 9.1
High Rain (mm)
70.0 46.4 100.8 183.0 208.6 269.0 278.8 223.2 203.4 132.6 151.4 83.2 1357.4
Low Rain (mm)
3.2 2.8 1.0 7.6 56.4 40.6 68.6 31.4 2.4 34.0 12.4 5.0 520.6

Shannon Annual Temperatures & Rainfall

SHANNON

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

Shannon Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40.0°C
0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4
≥ 35.0°C
1.8 1.7 1.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 1.2 6.1
≥ 30.0°C
7.6 7.8 4.5 0.8 0.0 0.0 0.0 0.0 0.0 0.2 2.4 5.2 28.6
≤ 2.0°C
0.0 0.0 0.0 0.0 0.2 1.0 2.0 1.1 1.0 0.2 0.1 0.0 5.7
≤ 0.0°C
0.0 0.0 0.0 0.0 0.0 0.2 0.4 0.0 0.0 0.0 0.0 0.0 0.7

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
32.0 33.0 30.9 26.0 21.3 18.0 17.0 18.0 19.0 22.0 27.0 30.6 27.0
Low Max
21.0 21.4 19.0 17.0 15.0 13.0 13.0 13.0 13.2 15.0 17.4 19.0 15.0
High Min
16.0 17.0 16.0 14.0 13.0 10.5 9.0 10.0 10.0 11.0 13.0 15.0 14.0
Low Min
9.0 9.3 9.0 7.0 6.0 4.0 3.0 4.0 4.0 5.0 6.0 8.0 5.0

Shannon Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
20 21 22 21 21 21 22 21 22 22 22 22 21.0
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 2021
Years of Maxima
20 21 21 21 21 21 22 21 22 22 22 22 21.0
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 2021
Years of Rainfall
20 21 22 21 21 21 22 21 22 22 22 22 21.0
Earliest Entry
1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1997 1996 1996
Latest Entry
2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2020 2020 2021

Station Details

SHANNON
Southwest, Western Australia
34.5683°S 116.3367°E 210m AMSL
Commenced 1996
Display Your Local Weather

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