S
M
T
W
T
F
S
29
50°
33°
30
51°
33°
1
50°
40°
2
53°
36°
3
61°
34°
4
55°
37°
5
50°
30°
6
49°
29°
7
46°
27°
8
43°
28°
9
44°
28°
10
46°
32°
11
45°
32°
12
46°
26°
13
45°
27°
14
Hist. Avg.
50°
33°
15
Hist. Avg.
49°
33°
16
Hist. Avg.
49°
32°
17
Hist. Avg.
49°
32°
18
Hist. Avg.
49°
32°
19
Hist. Avg.
48°
32°
20
Hist. Avg.
48°
31°
21
Hist. Avg.
48°
31°
22
Hist. Avg.
48°
31°
23
Hist. Avg.
48°
31°
24
Hist. Avg.
47°
31°
25
Hist. Avg.
47°
30°
26
Hist. Avg.
47°
30°
27
Hist. Avg.
47°
30°
28
Hist. Avg.
47°
30°
29
Hist. Avg.
47°
30°
30
Hist. Avg.
46°
30°
31
Hist. Avg.
46°
30°
1
Hist. Avg.
46°
30°
2
Hist. Avg.
46°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Cobb Island
Cobb Island's December 2026 forecast shows daily high temperatures ranging from 43° to 61°, with overnight lows between 26° and 40°. The average high for December is 49° with an average low of 31°. 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 Cobb Island. See also: January | February | March.