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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Deux-Montagnes, QC
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September
Average Temperature
High
21°
Feels 22
Low
12°
Feels 11
Average Precipitation
9 Days
Rain amount
69.3mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
21°
10
22°
11
19°
12
23°
13
23°
14
20°
15
22°
16
20°
17
20°
18
19°
19
18°
20
18°
21
18°
22
18°
23
18°
24
25
26
27
28
29
30
Forecast
Wednesday, September 9, 2026
Day
21°
Feels 24
Wind
20 km/h S
Gust
30 km/h
Humidity
77%
P.O.P
90%
Rain
2-4 mm
Night
19°
Feels 20
Wind
24 km/h W
Gust
36 km/h
Humidity
100%
P.O.P
90%
Rain
5-10 mm
Historical Averages
Sep 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.