Monthly Historical AveragesGrimsby, ON

Average Temperature
High
26°
Feels 27
Low
17°
Feels 17
Average Precipitation
12 Days
Rain amount
83.2mm
Snow amount
0cm
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Daily Historical Averages

S
M
T
W
T
F
S
ForecastWednesday, August 19, 2026
Day
Chance of a shower
25°Feels 31
Wind
18 km/h W
Gust
33 km/h
Humidity
57%
P.O.P
40%
Rain
~1 mm
Night
Partly cloudy
16°Feels 16
Wind
19 km/h N
Gust
29 km/h
Humidity
83%
P.O.P
20%
Historical AveragesAug 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
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