S
M
T
W
T
F
S
29
32°
23°
30
35°
25°
1
34°
25°
2
35°
24°
3
35°
25°
4
36°
25°
5
37°
24°
6
39°
24°
7
39°
23°
8
33°
22°
9
31°
21°
10
34°
22°
11
31°
14°
12
28°
11°
13
27°
14°
14
29°
18°
15
36°
17°
16
32°
19°
17
38°
20°
18
35°
18°
19
34°
17°
20
37°
18°
21
36°
18°
22
35°
16°
23
35°
7°
24
31°
4°
25
21°
12°
26
27°
15°
27
27°
16°
28
30°
12°
29
34°
16°
30
31°
16°
31
31°
15°
1
30°
0°
2
31°
-1°
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 21° to 39°, with overnight lows between -1° and 25°. The average high for December is 33° with an average low of 17°. 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.
