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