S
M
T
W
T
F
S
29
34°
27°
30
35°
28°
1
36°
30°
2
37°
35°
3
39°
37°
4
41°
29°
5
40°
28°
6
36°
29°
7
37°
28°
8
35°
28°
9
38°
31°
10
34°
31°
11
35°
29°
12
Hist. Avg.
39°
31°
13
Hist. Avg.
39°
31°
14
Hist. Avg.
39°
31°
15
Hist. Avg.
38°
31°
16
Hist. Avg.
38°
31°
17
Hist. Avg.
38°
31°
18
Hist. Avg.
38°
31°
19
Hist. Avg.
38°
31°
20
Hist. Avg.
38°
31°
21
Hist. Avg.
38°
31°
22
Hist. Avg.
38°
31°
23
Hist. Avg.
38°
30°
24
Hist. Avg.
38°
30°
25
Hist. Avg.
38°
30°
26
Hist. Avg.
38°
30°
27
Hist. Avg.
38°
30°
28
Hist. Avg.
38°
30°
29
Hist. Avg.
38°
30°
30
Hist. Avg.
38°
30°
31
Hist. Avg.
38°
30°
1
Hist. Avg.
39°
31°
2
Hist. Avg.
39°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Glacier
Glacier's December 2026 forecast shows daily high temperatures ranging from 34° to 41°, with overnight lows between 27° and 37°. The average high for December is 37° with an average low of 30°. 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 Glacier. See also: January | February | March.
