S
M
T
W
T
F
S
29
48°
36°
30
49°
35°
1
48°
33°
2
47°
33°
3
44°
32°
4
48°
33°
5
46°
33°
6
40°
30°
7
36°
25°
8
33°
22°
9
32°
25°
10
39°
28°
11
40°
30°
12
42°
29°
13
38°
29°
14
33°
24°
15
36°
25°
16
38°
28°
17
39°
27°
18
35°
22°
19
36°
18°
20
31°
15°
21
30°
16°
22
28°
21°
23
34°
24°
24
34°
22°
25
35°
13°
26
31°
10°
27
27°
9°
28
27°
10°
29
26°
14°
30
26°
20°
31
27°
15°
1
32°
9°
2
26°
8°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Channahon
Channahon's December 2026 forecast shows daily high temperatures ranging from 26° to 49°, with overnight lows between 8° and 36°. The average high for December is 36° with an average low of 23°. 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 Channahon. See also: January | February | March.