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Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Great Duck Island, ON
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September
Average Temperature
High
17°
Feels 17
Low
14°
Feels 13
Average Precipitation
11 Days
Rain amount
69.1mm
Snow amount
0cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
23°
4
22°
5
22°
6
19°
7
19°
8
18°
9
19°
10
19°
11
17°
12
18°
13
19°
14
19°
15
19°
16
19°
17
18°
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Thursday, September 3, 2026
Day
23°
Feels 27
Wind
19 km/h NW
Gust
28 km/h
Humidity
65%
P.O.P
10%
Night
16°
Feels 15
Wind
17 km/h W
Gust
26 km/h
Humidity
94%
P.O.P
10%
Historical Averages
Sep 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.