S
M
T
W
T
F
S
29
56°
43°
30
56°
43°
1
57°
45°
2
58°
53°
3
58°
54°
4
59°
54°
5
58°
52°
6
57°
52°
7
61°
50°
8
57°
48°
9
56°
43°
10
55°
41°
11
68°
56°
12
70°
44°
13
71°
39°
14
66°
41°
15
54°
40°
16
55°
38°
17
54°
42°
18
55°
53°
19
65°
53°
20
67°
52°
21
68°
50°
22
69°
50°
23
66°
54°
24
68°
40°
25
70°
39°
26
69°
40°
27
54°
45°
28
57°
52°
29
65°
52°
30
66°
53°
31
66°
53°
1
68°
52°
2
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in James Island
James Island's December 2026 forecast shows daily high temperatures ranging from 54° to 71°, with overnight lows between 38° and 56°. The average high for December is 62° 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.
