Best year time to visit Williamstown

General weather information about Williamstown

Average annual temperature is 6.8 °C

Absolute maximum temperature: 34.1 °C

Absolute minimum temperature: -29.1 °C

Number of sunny days: 146 days

Number of rainy days: 167 days

Number of snow days: 52 days

Look at detailed online map of Williamstown

* Weather data for Williamstown Canada is based on climate observations for 2026 year

Williamstown air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	8.5	9.1	8.3	16.9	32.4	34.1	31.7	25.5	27.9	24.8	11.8	15.1
Average daytime temperature (°C)	-0.9	-4.0	2.5	9.9	16.5	20.0	27.2	22.5	22.0	15.7	4.7	2.7
Average temperature (°C)	-5.1	-9.5	-1.8	4.2	10.4	15.2	22.1	17.9	16.8	11.2	0.3	-1.2
Average night temperature (°C)	-8.7	-14.3	-5.5	-0.2	5.2	11.4	18.5	14.4	13.0	8.0	-2.8	-4.4
Absolute minimum temperature (°C)	-21.5	-29.1	-15.4	-8.9	0.6	4.5	13.7	10.5	6.3	-1.0	-8.6	-13.9

Williamstown monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	8.0
Daylight mean duration (h)	9.0	10.3	11.9	13.6	15.1	15.8	15.4	14.2	12.6	10.9	9.4	8.6
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	8.0	8.0
Sunshine mean duration (h)	3.8	7.2	6.3	8.6	9.2	6.1	9.9	8.2	7.8	5.5	5.4	4.6
Precipitation (mm)	160	40	93	31	93	154	174	160	117	105	60	111
Sunny days	9	16	9	15	15	8	2	7	16	11	17	21
Rainy days	8	2	6	12	16	22	29	24	14	18	11	5
Snow days	14	10	16	3	0	0	0	0	0	2	2	5

Williamstown - weather forecast by months

Williamstown weather in january Williamstown weather in february Williamstown weather in march Williamstown weather in april Williamstown weather in may Williamstown weather in june Williamstown weather in july Williamstown weather in august Williamstown weather in september Williamstown weather in october Williamstown weather in november Williamstown weather in december

Best time to visit Williamstown:

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

May — 9.2(h)
July — 9.9(h)

Months with the longest average daylight duration in Williamstown:

June — 15.8(h)
July — 15.4(h)

The largest precipitation sum in Williamstown is at

January — 160(mm)

June — 154(mm)

July — 174(mm)

August — 160(mm)

Weather forecast in the closest to Williamstown admin centers