S
M
T
W
T
F
S
30
76°
52°
31
75°
49°
1
75°
54°
2
75°
56°
3
82°
61°
4
74°
59°
5
70°
57°
6
74°
51°
7
79°
51°
8
72°
53°
9
70°
53°
10
73°
49°
11
69°
46°
12
75°
45°
13
74°
59°
14
65°
43°
15
64°
39°
16
78°
56°
17
70°
53°
18
68°
42°
19
62°
37°
20
64°
43°
21
61°
44°
22
N/A
23
66°
44°
24
71°
38°
25
75°
47°
26
74°
53°
27
68°
52°
28
61°
51°
29
63°
52°
30
69°
54°
1
72°
56°
2
71°
53°
3
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Repentigny
Repentigny's September 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 47° and 56°. The average high for September is 69° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Repentigny. See also: October | November | December.
