Best year time to visit Grafton

General weather information about Grafton

Average annual temperature is 5.9 °C

Absolute maximum temperature: 36.8 °C

Absolute minimum temperature: -29.8 °C

Number of sunny days: 189

Number of rainy days: 129

Number of snow days: 47

Average annual precipitation: 500 mm

Look at detailed online map of Grafton

* Weather data for Grafton United States is based on climate observations for 2023 year

Grafton air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 0.4 2.7 2 12.6 29.8 36.8 33.8 32.3 34 29.2 12.2 10.1
Average daytime temperature (°C) -7.3 -5.8 -4.4 4.9 23.4 28.3 26.6 26.2 23.6 12.4 3.9 0.9
Average temperature (°C) -10.8 -11.6 -9.2 0.2 16.2 22.3 20.3 20.6 17.8 7.7 -0.5 -3
Average night temperature (°C) -13.6 -16.3 -13 -4.3 9.6 16.9 14.6 15.9 13.1 3.8 -3.7 -6
Absolute minimum temperature (°C) -28.4 -29.8 -20.2 -13.1 0.2 10 9.7 10.6 5.8 -9.7 -12.9 -16.7

Grafton monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 9.4 11 12.8 14.5 15.8 16.1 16 15.1 13.4 11.7 9.9 8.6
Daylight mean duration (h) 8.8 10.2 11.9 13.7 15.2 16 15.7 14.3 12.6 10.8 9.3 8.4
Daylight minimum duration (h) 8.4 9.5 11 12.9 14.5 15.8 15.1 13.5 11.8 10 8.7 8.3
Sunshine mean duration (h) 4.5 7.2 8.3 8.5 12.9 12.5 13.1 10.2 9.3 7 6 5.4
Precipitation (mm) 10 9 31 61 32 99 42 26 89 64 14 24
Sunny days 22 18 16 13 18 11 10 12 17 14 16 22
Rainy days 2 1 1 10 13 19 21 19 13 15 9 6
Snow days 7 9 14 7 2 5 3

Grafton - weather forecast by months

January February March April May June July August September October November December

Best time to visit Grafton:

The best time to visit Grafton during the most sunny months:

  • May — 12.9(h)
  • June — 12.5(h)
  • July — 13.1(h)

Months with the longest average daylight duration in Grafton:

  • June — 16(h)
  • July — 15.7(h)

The largest precipitation sum in Grafton is at

  • April — 61(mm)
  • June — 99(mm)
  • September — 89(mm)
  • October — 64(mm)

Weather forecast in the closest to Grafton admin centers