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14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Cornwall, PE
Exceptional El Niño dominates this fall
Content continues below
September
Average Temperature
High
19°
Feels 19
Low
11°
Feels 10
Average Precipitation
10 Days
Rain amount
79.5mm
Snow amount
0cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
21°
15
17°
16
19°
17
17°
18
18°
19
14°
20
15°
21
14°
22
14°
23
14°
24
15°
25
15°
26
16°
27
16°
28
16°
29
30
Forecast
Monday, September 14, 2026
Day
21°
Feels 24
Wind
30 km/h W
Gust
48 km/h
Humidity
73%
P.O.P
90%
Rain
~5 mm
Night
12°
Feels 9
Wind
34 km/h NW
Gust
53 km/h
Humidity
92%
P.O.P
40%
Rain
<1 mm
Historical Averages
Sep 14
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.