S
M
T
W
T
F
S
30
68°
53°
31
69°
54°
1
64°
50°
2
64°
48°
3
57°
50°
4
58°
55°
5
65°
53°
6
65°
51°
7
76°
52°
8
62°
47°
9
59°
43°
10
62°
52°
11
59°
52°
12
57°
47°
13
57°
47°
14
60°
51°
15
60°
48°
16
72°
50°
17
59°
40°
18
56°
40°
19
53°
43°
20
49°
39°
21
57°
42°
22
59°
44°
23
65°
44°
24
73°
53°
25
68°
46°
26
67°
44°
27
63°
38°
28
55°
43°
29
54°
41°
30
51°
43°
1
58°
50°
2
60°
42°
3
57°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sept-Îles
Sept-Îles's September 2026 forecast shows daily high temperatures ranging from 51° to 63°, with overnight lows between 38° and 50°. The average high for September is 57° 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 Sept-Îles. See also: October | November | December.
