Grafton Climate

Grafton Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
30.5 30.0 28.0 25.8 23.2 20.6 20.5 22.4 25.4 27.3 28.8 29.6 26.0
Mean Min (°C)
19.8 19.6 18.1 15.0 10.9 8.8 7.5 7.9 11.4 13.8 16.7 18.3 14.0
Mean Rain (mm)
151.3 111.8 122.6 85.3 75.7 72.0 42.5 43.2 41.2 62.4 93.4 91.4 992.0
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
11.9 11.2 13.5 9.7 9.8 9.7 7.5 6.2 6.3 7.4 9.3 11.2 92.2

Grafton Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.6 46.3 37.3 33.7 30.4 30.4 27.6 36.2 38.4 39.0 42.9 42.5 46.3
Low Max (°C)
20.4 22.7 20.4 17.7 16.1 14.0 13.2 14.6 15.6 17.5 18.3 18.2 13.2
High Min (°C)
28.6 24.3 22.7 20.7 18.8 16.3 17.7 17.8 18.3 20.4 22.8 23.6 28.6
Low Min (°C)
13.4 15.0 12.0 5.0 1.8 -0.8 -1.9 -0.2 3.2 5.8 8.5 11.3 -1.9
High Rain (mm)
116.2 136.0 103.4 113.8 226.1 128.4 137.2 99.8 109.0 91.0 131.1 74.2 226.1

Grafton Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
32.0 33.3 30.2 27.9 26.6 22.2 21.7 24.6 28.7 29.1 31.2 32.8 27.2
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)
21.3 20.6 19.4 16.2 12.4 10.3 9.0 9.3 12.9 15.4 18.4 19.4 14.4
Low Mn. Min (°C)
18.4 18.6 16.4 13.3 9.1 6.3 5.7 5.7 10.0 12.3 15.6 16.6 13.2
High Rain (mm)
308.4 315.0 394.8 257.0 516.9 219.6 270.1 189.2 166.1 239.8 292.5 209.8 1673.6
Low Rain (mm)
11.5 0.0 16.2 8.8 0.0 0.0 1.6 0.0 0.0 0.0 15.9 6.0 592.5

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 0.0 0.3 0.5 1.4
≥ 35.0°C
3.3 2.1 0.3 0.0 0.0 0.0 0.0 0.1 0.5 1.2 2.1 2.9 11.6
≥ 30.0°C
15.9 13.2 6.7 1.1 0.1 0.1 0.0 0.5 3.3 7.7 10.9 12.6 67.5
≤ 2.0°C
0.0 0.0 0.0 0.0 0.1 0.7 1.4 0.6 0.0 0.0 0.0 0.0 2.4
≤ 0.0°C
0.0 0.0 0.0 0.0 0.0 0.1 0.5 0.1 0.0 0.0 0.0 0.0 0.6

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
14 15 14 14 14 14 14 14 15 15 14 14 14.1
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Maxima
14 15 15 15 14 14 14 14 15 15 15 14 14.3
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Rainfall
27 28 27 28 30 28 26 26 28 27 25 24 26.7
Earliest Entry
1918 1918 1917 1917 1917 1917 1917 1917 1917 1918 1917 1917 1917
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017

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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