S
M
T
W
T
F
S
29
37°
26°
30
37°
25°
1
36°
26°
2
37°
25°
3
35°
19°
4
20°
20°
5
33°
19°
6
34°
14°
7
32°
8°
8
24°
4°
9
18°
5°
10
19°
8°
11
20°
15°
12
27°
14°
13
25°
17°
14
28°
17°
15
30°
16°
16
31°
9°
17
29°
8°
18
25°
6°
19
19°
4°
20
21°
3°
21
17°
2°
22
17°
13°
23
26°
15°
24
29°
14°
25
29°
12°
26
28°
11°
27
26°
10°
28
22°
10°
29
23°
8°
30
22°
3°
31
19°
0°
1
16°
10°
2
24°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Greater Sudbury
Greater Sudbury's December 2026 forecast shows daily high temperatures ranging from 16° to 37°, with overnight lows between 0° and 26°. The average high for December is 26° with an average low of 12°. 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 Greater Sudbury. See also: January | February | March.
