S
M
T
W
T
F
S
30
80°
57°
31
79°
51°
1
78°
46°
2
70°
47°
3
69°
53°
4
73°
56°
5
76°
54°
6
77°
46°
7
70°
46°
8
72°
49°
9
75°
49°
10
67°
53°
11
75°
53°
12
74°
52°
13
73°
51°
14
65°
47°
15
64°
43°
16
64°
42°
17
65°
50°
18
66°
42°
19
63°
50°
20
68°
51°
21
71°
44°
22
66°
40°
23
62°
42°
24
61°
41°
25
59°
39°
26
65°
42°
27
66°
47°
28
Hist. Avg.
65°
43°
29
Hist. Avg.
65°
42°
30
Hist. Avg.
64°
42°
1
Hist. Avg.
64°
42°
2
Hist. Avg.
63°
41°
3
Hist. Avg.
63°
41°
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 59° to 80°, with overnight lows between 39° and 57°. The average high for September is 69° with an average low of 48°. 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.
