S
M
T
W
T
F
S
29
68°
55°
30
69°
56°
1
68°
57°
2
70°
54°
3
71°
55°
4
68°
55°
5
70°
49°
6
68°
43°
7
60°
44°
8
57°
44°
9
60°
46°
10
61°
42°
11
57°
47°
12
58°
44°
13
64°
44°
14
56°
50°
15
57°
51°
16
61°
53°
17
67°
51°
18
69°
43°
19
67°
42°
20
56°
42°
21
59°
43°
22
56°
46°
23
58°
49°
24
66°
50°
25
68°
44°
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 James Island
James Island's December 2026 forecast shows daily high temperatures ranging from 56° to 71°, with overnight lows between 42° and 57°. The average high for December is 63° 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 James Island. See also: January | February | March.
