Grafton Climate

Grafton Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
30.6 30.0 28.2 25.9 23.3 20.7 20.8 22.7 25.6 27.3 29.1 29.8 26.1
Mean Min (°C)
19.8 19.6 18.1 15.0 10.9 9.0 7.5 7.9 11.2 14.0 16.5 18.4 13.9
Mean Rain (mm)
152.7 120.4 121.5 84.0 72.7 76.4 39.8 39.5 38.7 66.9 82.2 113.1 990.5
Median Rain (mm)
141.1 68.2 93.5 74.9 39.1 51.2 19.6 19.6 21.9 43.5 73.5 77.8 933.8
Mean Rain Days
12.1 11.9 14.4 10.2 9.9 9.9 7.4 6.0 6.3 8.2 8.9 11.7 117.6

Grafton Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.6 46.3 39.4 33.7 30.4 30.4 27.6 36.2 38.6 40.6 42.9 42.5 46.3
Low Max (°C)
20.4 20.6 20.0 17.7 16.1 14.0 13.2 14.6 15.6 17.4 18.3 18.2 13.2
High Min (°C)
28.6 24.6 23.0 20.7 18.8 16.3 17.7 17.8 19.0 20.7 22.8 23.7 28.6
Low Min (°C)
13.4 15.0 10.1 5.0 1.1 -0.8 -1.9 -0.2 3.2 5.8 6.2 11.3 -1.9
High Rain (mm)
126.5 136.0 103.4 113.8 226.1 128.4 137.2 99.8 109.0 91.0 131.1 132.0 226.1

Grafton Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
33.5 33.3 31.6 27.9 26.6 22.2 22.5 24.6 28.7 29.1 31.9 32.8 27.8
Low Mn. Max (°C)
27.7 27.6 26.2 24.2 21.5 19.3 19.6 21.2 23.7 23.8 25.6 25.7 24.9
High Mn. Min (°C)
21.7 20.7 19.4 16.2 12.4 10.9 9.0 9.3 12.9 16.4 18.4 19.6 14.5
Low Mn. Min (°C)
18.4 18.6 16.4 13.3 9.1 6.3 5.7 5.7 10.0 12.3 14.6 16.6 13.2
High Rain (mm)
308.4 449.6 394.8 257.0 516.9 219.6 270.1 189.2 166.1 239.8 292.5 512.8 1740.9
Low Rain (mm)
7.0 0.0 16.2 8.8 0.0 0.0 1.6 0.0 0.0 0.0 0.0 6.0 300.8

Grafton Annual Temperatures & Rainfall

GRAFTON RESEARCH STN

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

Grafton Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40.0°C
0.4 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 0.5 1.4
≥ 35.0°C
3.3 2.3 0.6 0.0 0.0 0.0 0.0 0.1 0.5 1.3 2.7 3.1 13.2
≥ 30.0°C
17.5 13.3 7.6 1.2 0.1 0.1 0.0 0.5 3.6 7.6 11.6 13.4 75.0
≤ 2.0°C
0.0 0.0 0.0 0.0 0.1 0.6 1.3 0.7 0.0 0.0 0.0 0.0 2.7
≤ 0.0°C
0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.1 0.0 0.0 0.0 0.0 0.5

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
34.1 32.5 30.1 28.0 25.3 23.1 23.1 25.7 29.7 32.2 32.8 34.1 31.1
Low Max
26.7 26.4 25.2 23.4 21.0 18.2 18.4 19.5 21.8 22.6 24.5 26.0 20.8
High Min
22.0 21.5 19.3 17.3 14.0 12.5 11.0 11.4 14.7 17.1 19.3 20.8 19.5
Low Min
17.2 17.9 15.6 12.2 7.0 4.8 3.9 4.3 8.1 10.7 13.6 15.7 7.3

Grafton Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
17 19 18 16 16 17 17 17 18 19 17 18 17.0
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2021 2021 2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2021
Years of Maxima
17 19 19 17 17 18 18 17 19 19 18 19 18.0
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2021 2021 2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2021
Years of Rainfall
30 32 30 30 32 32 30 30 32 31 28 26 29.0
Earliest Entry
1918 1918 1917 1917 1917 1917 1917 1917 1917 1918 1917 1917 1917
Latest Entry
2021 2021 2021 2021 2020 2020 2020 2020 2020 2020 2020 2020 2021

Station Details

GRAFTON RESEARCH STN
Northern Rivers, New South Wales/ACT
29.6224°S 152.9605°E 25m AMSL
Commenced 1917
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