Grafton Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
30.5 30.0 28.2 25.8 23.2 20.8 20.8 22.7 25.5 27.3 28.8 29.8 26.0
Mean Min (°C)
19.8 19.5 18.2 15.0 11.1 8.7 7.5 8.0 11.2 14.0 16.5 18.3 13.9
Mean Rain (mm)
146.8 127.0 128.0 85.6 73.5 71.4 40.0 37.6 39.6 68.5 86.9 110.7 1007.8
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
12.6 11.9 15.0 10.7 10.3 9.7 7.8 6.1 6.5 8.6 9.4 12.1 121.6

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 41.0 42.9 42.5 46.3
Low Max (°C)
20.4 20.6 20.0 17.7 15.6 14.0 13.2 14.6 15.6 14.3 18.3 18.2 13.2
High Min (°C)
28.6 24.6 23.0 20.7 20.2 16.3 17.7 17.8 19.0 20.7 22.8 23.7 28.6
Low Min (°C)
13.4 8.4 10.1 5.0 1.1 -0.8 -1.9 -0.2 3.2 4.6 6.2 9.5 -1.9
High Rain (mm)
126.5 252.0 103.4 113.8 226.1 128.4 137.2 99.8 109.0 91.0 131.1 132.0 252.0

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 22.6 25.1 28.7 29.9 31.9 32.8 27.8
Low Mn. Max (°C)
27.7 27.5 26.2 24.2 21.5 19.3 19.3 21.2 23.3 23.8 25.6 25.7 24.5
High Mn. Min (°C)
21.7 20.8 19.4 16.2 14.9 10.9 9.0 9.9 12.9 16.4 18.4 19.6 14.5
Low Mn. Min (°C)
18.2 17.4 16.4 13.2 9.1 6.3 5.7 5.7 10.0 12.3 14.6 16.4 13.2
High Rain (mm)
308.4 502.4 394.8 257.0 516.9 219.6 270.1 189.2 166.1 239.8 292.5 512.8 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 annual climate

Grafton Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.3 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 0.5 1.2
≥ 35°C
3.0 2.2 0.8 0.0 0.0 0.0 0.0 0.0 0.5 1.3 2.4 3.1 12.6
≥ 30°C
17.1 13.5 7.7 1.1 0.1 0.0 0.0 0.6 3.7 7.7 10.7 13.5 73.4
≤ 2°C
0.0 0.0 0.0 0.0 0.1 0.6 1.2 0.6 0.0 0.0 0.0 0.0 2.5
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.4

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
20 22 20 19 19 20 20 20 21 22 20 21 20.0
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Maxima
20 22 21 20 20 21 21 20 22 22 21 22 21.0
Earliest Entry
2003 2003 2003 2003 2003 2003 2003 2003 2002 2002 2002 2002 2002
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Rainfall
33 35 32 33 35 35 33 33 35 34 31 29 32.0
Earliest Entry
1918 1918 1917 1917 1917 1917 1917 1917 1917 1918 1917 1917 1917
Latest Entry
2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2023 2024

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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A very wet weekend for southeast Qld, northeast NSW

11:48 AEST A prolonged rainfall event is set to bring large totals to parts of NSW and Qld from Saturday, with possible heavy falls and flooding.  A low-pressure system in the Coral Sea, a deepening coastal trough and persistent easterlies will bring moisture-laden air into southeast Qld and northeast NSW will bring days of rainfall to the region.  While there is not a drop of rain on the radar over southeast Qld and Northeast NSW on Friday morning, the mass of cloud associated with a low in the Coral Sea will enhance rainfall over the weekend.

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