S
M
T
W
T
F
S
29
45°
36°
30
45°
33°
1
44°
37°
2
46°
39°
3
48°
22°
4
51°
20°
5
35°
21°
6
32°
22°
7
34°
23°
8
35°
18°
9
35°
17°
10
31°
18°
11
29°
21°
12
32°
20°
13
33°
21°
14
32°
25°
15
35°
26°
16
37°
26°
17
37°
27°
18
39°
32°
19
40°
31°
20
40°
31°
21
39°
28°
22
38°
26°
23
36°
28°
24
37°
24°
25
38°
27°
26
36°
26°
27
34°
21°
28
35°
20°
29
34°
25°
30
33°
18°
31
30°
14°
1
Hist. Avg.
32°
20°
2
Hist. Avg.
32°
20°
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 29° to 51°, with overnight lows between 14° and 39°. The average high for December is 37° with an average low of 25°. 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.
