S
M
T
W
T
F
S
29
61°
46°
30
64°
48°
1
64°
51°
2
63°
48°
3
61°
54°
4
66°
57°
5
67°
56°
6
68°
54°
7
60°
50°
8
61°
46°
9
56°
43°
10
54°
42°
11
54°
41°
12
55°
41°
13
54°
42°
14
56°
52°
15
64°
55°
16
68°
50°
17
58°
48°
18
60°
49°
19
65°
50°
20
65°
51°
21
56°
40°
22
52°
44°
23
56°
52°
24
64°
41°
25
63°
35°
26
53°
37°
27
50°
43°
28
55°
46°
29
61°
48°
30
66°
38°
31
63°
42°
1
53°
50°
2
60°
38°
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 50° to 68°, with overnight lows between 35° and 57°. The average high for December is 60° with an average low of 47°. 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.
