S
M
T
W
T
F
S
29
43°
31°
30
43°
30°
1
41°
29°
2
41°
29°
3
40°
28°
4
42°
28°
5
40°
27°
6
35°
24°
7
32°
19°
8
28°
17°
9
30°
20°
10
35°
26°
11
36°
26°
12
38°
25°
13
34°
25°
14
29°
22°
15
32°
21°
16
36°
22°
17
35°
23°
18
32°
20°
19
34°
18°
20
30°
12°
21
30°
14°
22
24°
17°
23
33°
21°
24
31°
19°
25
33°
9°
26
30°
9°
27
24°
7°
28
25°
7°
29
25°
13°
30
23°
17°
31
25°
10°
1
31°
6°
2
22°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in DeForest
DeForest's December 2026 forecast shows daily high temperatures ranging from 22° to 43°, 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 DeForest. See also: January | February | March.
