S
M
T
W
T
F
S
29
68°
46°
30
67°
47°
1
68°
41°
2
54°
34°
3
53°
32°
4
55°
36°
5
63°
39°
6
54°
33°
7
52°
34°
8
51°
31°
9
51°
31°
10
49°
29°
11
51°
30°
12
53°
32°
13
59°
34°
14
54°
35°
15
54°
38°
16
55°
34°
17
54°
32°
18
57°
31°
19
51°
28°
20
50°
28°
21
50°
29°
22
52°
30°
23
50°
30°
24
48°
29°
25
49°
28°
26
49°
29°
27
50°
28°
28
51°
29°
29
51°
32°
30
49°
30°
31
51°
28°
1
49°
27°
2
48°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Chatham
Chatham's December 2026 forecast shows daily high temperatures ranging from 48° to 68°, with overnight lows between 27° and 47°. The average high for December is 53° with an average low of 32°. 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 Chatham. See also: January | February | March.
