S
M
T
W
T
F
S
29
37°
1°
30
37°
7°
1
36°
4°
2
36°
8°
3
37°
8°
4
32°
7°
5
33°
-2°
6
29°
-1°
7
30°
2°
8
34°
6°
9
32°
2°
10
27°
4°
11
26°
1°
12
25°
-7°
13
23°
-10°
14
21°
-11°
15
22°
-10°
16
22°
-10°
17
21°
-11°
18
22°
-9°
19
31°
-10°
20
30°
-3°
21
30°
1°
22
25°
0°
23
23°
-11°
24
21°
-13°
25
17°
-12°
26
21°
-9°
27
23°
-7°
28
30°
-10°
29
31°
-7°
30
31°
-9°
31
30°
-11°
1
31°
-12°
2
28°
-11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Gunnison
Gunnison's December 2026 forecast shows daily high temperatures ranging from 17° to 37°, with overnight lows between -13° and 8°. The average high for December is 28° with an average low of -4°. 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 Gunnison. See also: January | February | March.
