Monthly Historical AveragesGrimston, ON
Average Temperature
High
11°
Feels 9
Low
1°
Feels -3
Average Precipitation
11 Days
71mm
11.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, April 12, 2026
Day
11°Feels 8
Wind
40 km/h SE
Gust
60 km/h
Humidity
71%
P.O.P
90%
Snow
<1 cm
Rain
15-20 mm
Night
11°Feels 8
Wind
43 km/h SW
Gust
65 km/h
Humidity
94%
P.O.P
90%
Rain
15-20 mm
Historical AveragesApr 12
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity