S
M
T
W
T
F
S
30
63°
45°
31
68°
45°
1
64°
41°
2
68°
37°
3
66°
45°
4
63°
55°
5
68°
50°
6
59°
48°
7
68°
52°
8
52°
37°
9
59°
37°
10
59°
52°
11
57°
41°
12
59°
49°
13
65°
52°
14
62°
43°
15
60°
51°
16
63°
43°
17
59°
44°
18
58°
43°
19
56°
42°
20
56°
44°
21
57°
42°
22
59°
41°
23
57°
42°
24
56°
43°
25
51°
41°
26
49°
36°
27
49°
34°
28
50°
38°
29
51°
40°
30
50°
41°
1
55°
42°
2
55°
43°
3
54°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Havre-Saint-Pierre
Havre-Saint-Pierre's September 2026 forecast shows daily high temperatures ranging from 49° to 65°, with overnight lows between 34° and 52°. The average high for September is 56° with an average low of 42°. 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 Havre-Saint-Pierre. See also: October | November | December.
