S
M
T
W
T
F
S
29
40°
24°
30
42°
18°
1
40°
14°
2
29°
13°
3
24°
23°
4
35°
21°
5
34°
17°
6
32°
21°
7
31°
21°
8
35°
17°
9
34°
12°
10
27°
10°
11
21°
12°
12
22°
11°
13
28°
6°
14
28°
12°
15
24°
10°
16
27°
17°
17
28°
6°
18
31°
10°
19
22°
13°
20
21°
6°
21
26°
5°
22
20°
2°
23
17°
9°
24
19°
14°
25
26°
14°
26
27°
6°
27
18°
11°
28
25°
10°
29
Hist. Avg.
20°
3°
30
Hist. Avg.
20°
3°
31
Hist. Avg.
20°
3°
1
Hist. Avg.
20°
3°
2
Hist. Avg.
20°
2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Sudbury
Sudbury's December 2026 forecast shows daily high temperatures ranging from 17° to 42°, with overnight lows between 2° and 24°. The average high for December is 28° with an average low of 13°. 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 Sudbury. See also: January | February | March.
