S
M
T
W
T
F
S
29
41°
18°
30
36°
20°
1
36°
21°
2
39°
20°
3
38°
21°
4
36°
20°
5
39°
21°
6
39°
18°
7
37°
16°
8
36°
16°
9
31°
15°
10
28°
13°
11
28°
15°
12
36°
7°
13
31°
9°
14
20°
15°
15
32°
17°
16
34°
3°
17
33°
2°
18
23°
9°
19
20°
-2°
20
23°
-3°
21
14°
1°
22
15°
8°
23
19°
13°
24
24°
14°
25
31°
6°
26
34°
18°
27
Hist. Avg.
24°
5°
28
Hist. Avg.
24°
4°
29
Hist. Avg.
24°
4°
30
Hist. Avg.
24°
4°
31
Hist. Avg.
24°
4°
1
Hist. Avg.
24°
4°
2
Hist. Avg.
23°
3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Bismarck
Bismarck's December 2026 forecast shows daily high temperatures ranging from 14° to 41°, with overnight lows between -3° and 21°. The average high for December is 30° with an average low of 13°. 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 Bismarck. See also: January | February | March.
