S
M
T
W
T
F
S
29
58°
46°
30
59°
53°
1
60°
54°
2
68°
47°
3
68°
45°
4
58°
50°
5
60°
45°
6
59°
43°
7
57°
42°
8
56°
43°
9
56°
45°
10
58°
52°
11
65°
52°
12
57°
44°
13
64°
54°
14
64°
50°
15
61°
52°
16
Hist. Avg.
61°
47°
17
Hist. Avg.
61°
47°
18
Hist. Avg.
60°
46°
19
Hist. Avg.
60°
46°
20
Hist. Avg.
60°
46°
21
Hist. Avg.
60°
46°
22
Hist. Avg.
60°
46°
23
Hist. Avg.
60°
46°
24
Hist. Avg.
60°
46°
25
Hist. Avg.
60°
45°
26
Hist. Avg.
59°
45°
27
Hist. Avg.
59°
45°
28
Hist. Avg.
59°
45°
29
Hist. Avg.
59°
45°
30
Hist. Avg.
59°
45°
31
Hist. Avg.
59°
44°
1
Hist. Avg.
59°
44°
2
Hist. Avg.
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Charleston
Charleston's December 2026 forecast shows daily high temperatures ranging from 56° to 68°, with overnight lows between 42° and 54°. The average high for December is 60° with an average low of 48°. 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 Charleston. See also: January | February | March.
