S
M
T
W
T
F
S
29
53°
24°
30
50°
22°
1
43°
21°
2
36°
23°
3
38°
32°
4
43°
35°
5
47°
33°
6
48°
32°
7
47°
30°
8
44°
30°
9
41°
26°
10
40°
25°
11
35°
21°
12
39°
20°
13
37°
18°
14
33°
16°
15
31°
18°
16
42°
29°
17
43°
30°
18
Hist. Avg.
40°
26°
19
Hist. Avg.
39°
25°
20
Hist. Avg.
39°
25°
21
Hist. Avg.
39°
25°
22
Hist. Avg.
39°
25°
23
Hist. Avg.
38°
24°
24
Hist. Avg.
38°
24°
25
Hist. Avg.
38°
24°
26
Hist. Avg.
38°
24°
27
Hist. Avg.
38°
24°
28
Hist. Avg.
37°
23°
29
Hist. Avg.
37°
23°
30
Hist. Avg.
37°
23°
31
Hist. Avg.
37°
23°
1
Hist. Avg.
37°
23°
2
Hist. Avg.
37°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Belleville
Belleville's December 2026 forecast shows daily high temperatures ranging from 31° to 53°, with overnight lows between 16° and 35°. The average high for December is 42° 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 Belleville. See also: January | February | March.
