S
M
T
W
T
F
S
29
60°
36°
30
59°
40°
1
62°
44°
2
61°
42°
3
70°
35°
4
68°
34°
5
57°
35°
6
56°
39°
7
61°
42°
8
62°
42°
9
55°
32°
10
61°
37°
11
64°
42°
12
Hist. Avg.
61°
37°
13
Hist. Avg.
61°
37°
14
Hist. Avg.
61°
36°
15
Hist. Avg.
60°
36°
16
Hist. Avg.
60°
36°
17
Hist. Avg.
60°
36°
18
Hist. Avg.
60°
36°
19
Hist. Avg.
60°
36°
20
Hist. Avg.
59°
36°
21
Hist. Avg.
59°
35°
22
Hist. Avg.
59°
35°
23
Hist. Avg.
59°
35°
24
Hist. Avg.
58°
35°
25
Hist. Avg.
58°
35°
26
Hist. Avg.
58°
35°
27
Hist. Avg.
58°
35°
28
Hist. Avg.
58°
35°
29
Hist. Avg.
58°
35°
30
Hist. Avg.
58°
35°
31
Hist. Avg.
58°
34°
1
Hist. Avg.
58°
34°
2
Hist. Avg.
58°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in St. George
St. George's December 2026 forecast shows daily high temperatures ranging from 55° to 70°, with overnight lows between 32° and 44°. The average high for December is 61° with an average low of 38°. 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 St. George. See also: January | February | March.