S
M
T
W
T
F
S
29
44°
31°
30
45°
30°
1
43°
29°
2
44°
29°
3
41°
28°
4
43°
28°
5
42°
27°
6
36°
25°
7
33°
21°
8
30°
17°
9
30°
22°
10
36°
26°
11
36°
26°
12
39°
25°
13
35°
25°
14
30°
21°
15
32°
21°
16
35°
22°
17
36°
23°
18
33°
20°
19
34°
17°
20
30°
11°
21
30°
13°
22
25°
17°
23
34°
20°
24
32°
18°
25
33°
9°
26
30°
8°
27
24°
7°
28
24°
6°
29
25°
11°
30
24°
17°
31
26°
11°
1
32°
6°
2
23°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mukwonago
Mukwonago's December 2026 forecast shows daily high temperatures ranging from 23° to 45°, with overnight lows between 5° and 31°. The average high for December is 33° with an average low of 19°. 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 Mukwonago. See also: January | February | March.
