Monthly Historical AveragesWilliamstown, ON
Average Temperature
High
12°
Feels 10
Low
1°
Feels -2
Average Precipitation
11 Days
61.2mm
4.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSaturday, April 4, 2026
Day
7°Feels 3
Wind
24 km/h E
Gust
36 km/h
Humidity
67%
P.O.P
40%
Rain
~1 mm
Night
6°Feels 2
Wind
29 km/h E
Gust
44 km/h
Humidity
94%
P.O.P
90%
Rain
5-10 mm
Historical AveragesApr 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity