S
M
T
W
T
F
S
29
36°
18°
30
29°
26°
1
35°
24°
2
37°
23°
3
32°
28°
4
39°
25°
5
39°
19°
6
38°
16°
7
31°
20°
8
32°
16°
9
30°
23°
10
30°
27°
11
37°
25°
12
37°
23°
13
36°
19°
14
35°
21°
15
36°
23°
16
33°
18°
17
32°
22°
18
31°
24°
19
35°
19°
20
36°
20°
21
33°
17°
22
31°
20°
23
29°
21°
24
36°
14°
25
30°
15°
26
34°
23°
27
34°
25°
28
Hist. Avg.
30°
15°
29
Hist. Avg.
30°
15°
30
Hist. Avg.
30°
15°
31
Hist. Avg.
30°
15°
1
Hist. Avg.
30°
15°
2
Hist. Avg.
30°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Kalispell
Kalispell's December 2026 forecast shows daily high temperatures ranging from 29° to 39°, with overnight lows between 14° and 28°. The average high for December is 34° with an average low of 21°. 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 Kalispell. See also: January | February | March.
