S
M
T
W
T
F
S
29
38°
13°
30
36°
17°
1
37°
18°
2
36°
17°
3
38°
13°
4
36°
14°
5
34°
8°
6
33°
2°
7
29°
8°
8
40°
12°
9
41°
14°
10
36°
9°
11
26°
2°
12
28°
7°
13
31°
12°
14
33°
10°
15
37°
6°
16
36°
8°
17
35°
9°
18
34°
1°
19
31°
2°
20
31°
8°
21
32°
5°
22
37°
-4°
23
28°
-2°
24
23°
5°
25
28°
8°
26
33°
10°
27
34°
13°
28
36°
6°
29
34°
-1°
30
36°
-2°
31
30°
-1°
1
27°
-1°
2
27°
2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Glen
Glen's December 2026 forecast shows daily high temperatures ranging from 23° to 41°, with overnight lows between -4° and 18°. The average high for December is 33° with an average low of 7°. 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 Glen. See also: January | February | March.
