S
M
T
W
T
F
S
30
66°
43°
31
66°
42°
1
68°
50°
2
74°
50°
3
65°
49°
4
66°
50°
5
69°
44°
6
67°
47°
7
71°
46°
8
65°
45°
9
65°
40°
10
63°
43°
11
68°
38°
12
63°
39°
13
62°
42°
14
66°
39°
15
65°
36°
16
61°
34°
17
58°
34°
18
58°
35°
19
57°
37°
20
59°
38°
21
58°
38°
22
66°
34°
23
66°
41°
24
64°
43°
25
66°
42°
26
61°
43°
27
64°
34°
28
62°
30°
29
54°
31°
30
54°
41°
1
57°
42°
2
60°
42°
3
62°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Baie-Saint-Paul
Baie-Saint-Paul's September 2026 forecast shows daily high temperatures ranging from 54° to 74°, with overnight lows between 30° and 50°. The average high for September is 63° with an average low of 41°. 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 Baie-Saint-Paul. See also: October | November | December.