Monthly Historical AveragesCornwall, ON
Average Temperature
High
26°
Feels 27
Low
14°
Feels 14
Average Precipitation
12 Days
94mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, August 5, 2026
Day
29°Feels 36
Wind
13 km/h SW
Gust
20 km/h
Humidity
52%
P.O.P
10%
Night
20°Feels 22
Wind
11 km/h S
Gust
17 km/h
Humidity
88%
P.O.P
20%
Historical AveragesAug 5
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity