Best year time to visit Williamstown

General weather information about Williamstown

Average annual temperature is 13.5 °C

Absolute maximum temperature: 34.5 °C

Absolute minimum temperature: -8.6 °C

Number of sunny days: 178

Number of rainy days: 182

Number of snow days: 5

Average annual precipitation: 986 mm

Look at detailed online map of Williamstown

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

Williamstown air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 16.6 22.7 23.7 27.5 30.9 33.1 32.8 34.5 34.1 29.7 24.9 16.3
Average daytime temperature (°C) 8.6 12.9 13 18.9 23.4 27.4 30.3 29.4 27.3 20.1 13.3 9.7
Average temperature (°C) 4.2 6.1 6.5 12.2 16.9 20.9 24.2 23.2 20.5 14.4 7.4 4.9
Average night temperature (°C) 1 1.3 1.8 6.6 11.1 15.4 19.5 18.1 15 10.1 3.2 1.6
Absolute minimum temperature (°C) -5.9 -8.6 -6.6 -0.8 2.8 10.2 15.1 12.2 10.2 -1.4 -7.3 -6.9

Williamstown monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.2 11.3 12.6 13.8 14.7 14.9 14.8 14.2 13 11.8 10.6 9.7
Daylight mean duration (h) 9.8 10.8 12 13.2 14.3 14.8 14.6 13.6 12.5 11.2 10.1 9.5
Daylight minimum duration (h) 9.5 10.3 11.3 12.6 13.8 14.7 14.2 13.1 11.9 10.6 9.7 9.5
Sunshine mean duration (h) 5.3 7.5 7.5 9.7 10 10.9 11.5 11.4 10.4 7.5 7.5 5.8
Precipitation (mm) 127 55 132 89 58 80 104 76 73 79 41 73
Sunny days 6 17 16 15 19 14 7 15 14 18 23 14
Rainy days 23 11 13 15 12 16 24 16 16 13 7 16
Snow days 2 2 1

Williamstown - weather forecast by months

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

Best time to visit Williamstown:

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

  • July — 11.5(h)
  • August — 11.4(h)

The largest precipitation sum in Williamstown is at

  • January — 127(mm)
  • March — 132(mm)
  • July — 104(mm)

Weather forecast in the closest to Williamstown admin centers