S
M
T
W
T
F
S
29
44°
38°
30
44°
38°
1
48°
37°
2
47°
39°
3
49°
34°
4
35°
31°
5
47°
27°
6
47°
25°
7
35°
22°
8
34°
26°
9
36°
23°
10
34°
21°
11
34°
23°
12
35°
26°
13
37°
26°
14
37°
29°
15
39°
32°
16
40°
28°
17
44°
25°
18
41°
25°
19
35°
26°
20
34°
22°
21
35°
20°
22
32°
25°
23
37°
29°
24
40°
29°
25
40°
30°
26
39°
28°
27
38°
26°
28
36°
22°
29
33°
18°
30
31°
18°
31
31°
19°
1
33°
16°
2
34°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Chatham-Kent
Chatham-Kent's December 2026 forecast shows daily high temperatures ranging from 31° to 49°, with overnight lows between 16° and 39°. The average high for December is 38° 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-Kent. See also: January | February | March.