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Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Cornwall, ON
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Content continues below
June
Average Temperature
High
24°
Feels 25
Low
13°
Feels 12
Average Precipitation
13 Days
Rain amount
96.8mm
Snow amount
0cm
Daily Historical Averages
June 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
18°
20
20°
21
22°
22
23°
23
23°
24
23°
25
23°
26
23°
27
23°
28
25°
29
25°
30
26°
Forecast
Friday, June 19, 2026
Day
18°
Feels 22
Wind
25 km/h W
Gust
50 km/h
Humidity
76%
P.O.P
80%
Rain
5-10 mm
Night
14°
Feels 13
Wind
22 km/h W
Gust
33 km/h
Humidity
100%
P.O.P
80%
Rain
~5 mm
Historical Averages
Jun 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.