S
M
T
W
T
F
S
29
16°
3°
30
14°
0°
1
9°
-2°
2
0°
-1°
3
10°
1°
4
12°
1°
5
8°
2°
6
9°
0°
7
7°
-4°
8
5°
0°
9
7°
-2°
10
7°
-3°
11
2°
-5°
12
13°
-5°
13
12°
-8°
14
-3°
-4°
15
14°
-2°
16
15°
-10°
17
11°
-10°
18
0°
-4°
19
-1°
-4°
20
1°
-18°
21
9°
-20°
22
4°
3°
23
13°
-3°
24
13°
-6°
25
7°
-14°
26
3°
-4°
27
5°
-19°
28
9°
-17°
29
-5°
-17°
30
-10°
-16°
31
-7°
-8°
1
-4°
-7°
2
-4°
-4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cape Dorset
Cape Dorset's December 2026 forecast shows daily high temperatures ranging from -10° to 16°, with overnight lows between -20° and 3°. The average high for December is 6° with an average low of -6°. 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 Cape Dorset. See also: January | February | March.