S
M
T
W
T
F
S
29
52°
37°
30
60°
36°
1
57°
38°
2
57°
36°
3
59°
34°
4
46°
30°
5
56°
33°
6
55°
33°
7
51°
29°
8
45°
28°
9
44°
25°
10
44°
28°
11
42°
26°
12
43°
26°
13
43°
23°
14
41°
19°
15
42°
24°
16
44°
31°
17
48°
32°
18
47°
33°
19
52°
25°
20
51°
18°
21
45°
18°
22
38°
19°
23
42°
26°
24
42°
21°
25
49°
20°
26
40°
19°
27
41°
17°
28
40°
18°
29
40°
21°
30
44°
31°
31
54°
21°
1
55°
17°
2
40°
13°
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 38° to 60°, with overnight lows between 13° and 38°. The average high for December is 47° with an average low of 26°. 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.
