S
M
T
W
T
F
S
29
50°
25°
30
47°
19°
1
38°
14°
2
38°
13°
3
39°
22°
4
38°
16°
5
39°
21°
6
41°
23°
7
44°
14°
8
43°
18°
9
42°
16°
10
43°
18°
11
45°
21°
12
49°
22°
13
49°
19°
14
44°
16°
15
42°
17°
16
38°
14°
17
40°
14°
18
41°
15°
19
42°
16°
20
42°
22°
21
44°
17°
22
43°
20°
23
44°
17°
24
42°
19°
25
43°
19°
26
45°
20°
27
43°
14°
28
41°
16°
29
42°
20°
30
45°
22°
31
43°
15°
1
42°
11°
2
39°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cedar City
Cedar City's December 2026 forecast shows daily high temperatures ranging from 38° to 50°, with overnight lows between 11° and 25°. The average high for December is 43° with an average low of 18°. 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 Cedar City. See also: January | February | March.