S
M
T
W
T
F
S
29
54°
25°
30
50°
22°
1
38°
22°
2
39°
23°
3
42°
27°
4
46°
35°
5
50°
39°
6
53°
37°
7
54°
35°
8
53°
31°
9
45°
32°
10
43°
24°
11
43°
21°
12
36°
23°
13
38°
21°
14
37°
20°
15
35°
19°
16
36°
19°
17
35°
17°
18
33°
23°
19
38°
26°
20
41°
31°
21
45°
32°
22
48°
31°
23
46°
26°
24
41°
19°
25
36°
19°
26
35°
21°
27
37°
23°
28
43°
21°
29
42°
19°
30
35°
17°
31
33°
20°
1
36°
23°
2
43°
21°
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 33° to 54°, with overnight lows between 17° and 39°. The average high for December is 42° with an average low of 25°. 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.