S
M
T
W
T
F
S
29
50°
41°
30
51°
43°
1
53°
42°
2
53°
43°
3
54°
41°
4
52°
40°
5
50°
40°
6
51°
41°
7
52°
39°
8
47°
38°
9
43°
38°
10
44°
36°
11
44°
38°
12
45°
36°
13
45°
34°
14
44°
26°
15
39°
27°
16
36°
31°
17
40°
30°
18
39°
36°
19
47°
35°
20
48°
32°
21
43°
28°
22
39°
28°
23
37°
27°
24
39°
34°
25
42°
27°
26
47°
23°
27
37°
25°
28
34°
26°
29
38°
25°
30
37°
29°
31
38°
34°
1
49°
29°
2
47°
23°
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 34° to 54°, with overnight lows between 23° and 43°. The average high for December is 44° with an average low of 33°. 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.
