S
M
T
W
T
F
S
29
32°
17°
30
33°
24°
1
39°
23°
2
41°
23°
3
36°
26°
4
43°
20°
5
46°
17°
6
32°
13°
7
31°
16°
8
32°
13°
9
30°
10°
10
27°
10°
11
25°
9°
12
26°
7°
13
25°
9°
14
26°
8°
15
26°
13°
16
27°
15°
17
33°
18°
18
32°
18°
19
34°
19°
20
32°
19°
21
33°
17°
22
33°
15°
23
30°
13°
24
29°
12°
25
28°
18°
26
31°
17°
27
32°
17°
28
33°
16°
29
32°
15°
30
31°
8°
31
34°
1°
1
Hist. Avg.
32°
10°
2
Hist. Avg.
32°
9°
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 25° to 46°, with overnight lows between 1° and 26°. The average high for December is 32° with an average low of 15°. 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.
