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