S
M
T
W
T
F
S
30
31°
16°
1
31°
11°
2
16°
9°
3
28°
12°
4
33°
4°
5
9°
3°
6
24°
2°
7
24°
1°
8
13°
-1°
9
20°
4°
10
19°
11°
11
22°
16°
12
30°
16°
13
25°
16°
14
21°
9°
15
16°
7°
16
28°
5°
17
35°
15°
18
29°
19°
19
45°
22°
20
40°
11°
21
22°
10°
22
13°
5°
23
8°
0°
24
13°
0°
25
18°
6°
26
10°
1°
27
13°
-1°
28
24°
8°
29
28°
10°
30
34°
18°
31
22°
3°
1
28°
2°
2
27°
11°
3
11°
-1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Port-Cartier
Port-Cartier's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Port-Cartier. See also: January | February | March.