S
M
T
W
T
F
S
29
47°
27°
30
49°
31°
1
52°
30°
2
50°
30°
3
52°
29°
4
48°
27°
5
50°
26°
6
48°
28°
7
50°
27°
8
42°
24°
9
40°
22°
10
39°
20°
11
37°
26°
12
39°
22°
13
40°
22°
14
39°
17°
15
38°
17°
16
40°
20°
17
39°
19°
18
38°
23°
19
44°
22°
20
45°
15°
21
38°
15°
22
35°
16°
23
34°
16°
24
38°
17°
25
38°
15°
26
42°
8°
27
35°
6°
28
30°
8°
29
33°
4°
30
32°
14°
31
35°
19°
1
46°
12°
2
43°
8°
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 30° to 52°, with overnight lows between 4° and 31°. The average high for December is 41° with an average low of 19°. 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.