S
M
T
W
T
F
S
29
46°
35°
30
50°
37°
1
51°
36°
2
50°
37°
3
52°
35°
4
49°
34°
5
49°
33°
6
47°
34°
7
50°
33°
8
43°
31°
9
40°
30°
10
41°
29°
11
40°
31°
12
41°
28°
13
41°
25°
14
42°
19°
15
36°
20°
16
34°
23°
17
37°
24°
18
36°
29°
19
44°
28°
20
46°
25°
21
40°
22°
22
36°
21°
23
35°
20°
24
36°
27°
25
38°
20°
26
44°
17°
27
34°
18°
28
30°
18°
29
35°
17°
30
33°
22°
31
34°
27°
1
46°
21°
2
44°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Belmont
Belmont's December 2026 forecast shows daily high temperatures ranging from 30° to 52°, with overnight lows between 16° and 37°. The average high for December is 41° with an average low of 26°. 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 Belmont. See also: January | February | March.
