S
M
T
W
T
F
S
29
44°
31°
30
44°
31°
1
42°
30°
2
42°
30°
3
41°
29°
4
43°
29°
5
41°
28°
6
36°
25°
7
33°
20°
8
29°
17°
9
31°
21°
10
36°
26°
11
37°
26°
12
39°
25°
13
35°
26°
14
30°
23°
15
33°
22°
16
37°
23°
17
36°
24°
18
33°
21°
19
35°
19°
20
30°
12°
21
31°
15°
22
25°
18°
23
34°
21°
24
31°
19°
25
34°
9°
26
31°
10°
27
25°
8°
28
26°
7°
29
25°
13°
30
24°
18°
31
26°
10°
1
32°
6°
2
22°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Madison
Madison's December 2026 forecast shows daily high temperatures ranging from 22° to 44°, with overnight lows between 5° and 31°. The average high for December is 34° with an average low of 20°. 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 Madison. See also: January | February | March.
