S
M
T
W
T
F
S
29
34°
22°
30
36°
23°
1
36°
21°
2
37°
18°
3
35°
17°
4
32°
16°
5
29°
16°
6
32°
12°
7
30°
13°
8
25°
16°
9
32°
13°
10
31°
11°
11
25°
4°
12
22°
2°
13
16°
0°
14
15°
0°
15
12°
3°
16
17°
5°
17
17°
11°
18
26°
-4°
19
30°
-8°
20
26°
-6°
21
10°
4°
22
15°
3°
23
20°
-2°
24
18°
4°
25
16°
8°
26
25°
6°
27
26°
-4°
28
Hist. Avg.
18°
0°
29
Hist. Avg.
18°
-1°
30
Hist. Avg.
17°
-1°
31
Hist. Avg.
17°
-1°
1
Hist. Avg.
17°
-2°
2
Hist. Avg.
17°
-2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Sept-Îles
Sept-Îles's December 2026 forecast shows daily high temperatures ranging from 10° to 37°, with overnight lows between -8° and 23°. The average high for December is 25° with an average low of 8°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Sept-Îles. See also: January | February | March.