Monthly Historical AveragesCornwall Island, ON
Average Temperature
High
20°
Feels 20
Low
7°
Feels 6
Average Precipitation
12 Days
72.5mm
0.1cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, May 24, 2026
Day
15°Feels 14
Wind
14 km/h SE
Gust
21 km/h
Humidity
77%
P.O.P
90%
Rain
5-10 mm
Night
13°Feels 12
Wind
12 km/h SE
Gust
18 km/h
Humidity
94%
P.O.P
70%
Rain
~1 mm
Historical AveragesMay 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity