S
M
T
W
T
F
S
29
66°
50°
30
71°
43°
1
71°
43°
2
57°
44°
3
57°
48°
4
59°
53°
5
65°
54°
6
68°
57°
7
71°
50°
8
71°
48°
9
67°
50°
10
64°
50°
11
65°
46°
12
63°
48°
13
57°
47°
14
62°
42°
15
59°
41°
16
56°
42°
17
56°
42°
18
57°
43°
19
55°
44°
20
57°
49°
21
59°
52°
22
68°
49°
23
69°
50°
24
65°
44°
25
60°
40°
26
57°
40°
27
55°
42°
28
55°
48°
29
62°
37°
30
58°
35°
31
53°
36°
1
50°
39°
2
52°
40°
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 71°, with overnight lows between 35° and 57°. The average high for December is 61° with an average low of 45°. 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.
