S
M
T
W
T
F
S
29
43°
30°
30
41°
29°
1
36°
28°
2
35°
27°
3
35°
27°
4
38°
26°
5
38°
26°
6
33°
20°
7
27°
13°
8
25°
14°
9
28°
16°
10
34°
24°
11
35°
23°
12
38°
24°
13
33°
24°
14
26°
23°
15
33°
19°
16
35°
20°
17
34°
21°
18
31°
17°
19
30°
15°
20
28°
7°
21
26°
15°
22
27°
15°
23
32°
19°
24
30°
16°
25
32°
9°
26
28°
15°
27
25°
15°
28
29°
11°
29
27°
11°
30
24°
14°
31
25°
5°
1
29°
2°
2
19°
4°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Bloomington
Bloomington's December 2026 forecast shows daily high temperatures ranging from 19° to 43°, with overnight lows between 2° and 30°. The average high for December is 31° with an average low of 18°. 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 Bloomington. See also: January | February | March.