S
M
T
W
T
F
S
29
50°
35°
30
51°
35°
1
49°
34°
2
49°
34°
3
46°
33°
4
45°
34°
5
51°
34°
6
57°
33°
7
54°
32°
8
57°
32°
9
50°
31°
10
50°
32°
11
52°
16°
12
44°
12°
13
38°
18°
14
41°
20°
15
42°
24°
16
43°
29°
17
47°
25°
18
53°
27°
19
55°
30°
20
55°
24°
21
56°
31°
22
55°
23°
23
57°
15°
24
49°
14°
25
37°
18°
26
43°
23°
27
48°
30°
28
54°
29°
29
57°
33°
30
57°
34°
31
58°
28°
1
60°
21°
2
57°
17°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cheyenne
Cheyenne's December 2026 forecast shows daily high temperatures ranging from 37° to 60°, with overnight lows between 12° and 35°. The average high for December is 50° with an average low of 27°. 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 Cheyenne. See also: January | February | March.
