S
M
T
W
T
F
S
29
43°
30°
30
43°
29°
1
41°
28°
2
40°
28°
3
40°
27°
4
42°
27°
5
40°
26°
6
35°
23°
7
31°
17°
8
27°
17°
9
30°
19°
10
37°
25°
11
37°
25°
12
39°
24°
13
35°
24°
14
28°
23°
15
34°
20°
16
36°
22°
17
35°
23°
18
34°
20°
19
33°
17°
20
30°
9°
21
30°
15°
22
26°
16°
23
34°
20°
24
31°
18°
25
34°
9°
26
31°
13°
27
24°
12°
28
28°
8°
29
27°
13°
30
25°
16°
31
27°
7°
1
32°
4°
2
21°
5°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Middleton
Middleton's December 2026 forecast shows daily high temperatures ranging from 21° to 43°, with overnight lows between 4° and 30°. 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 Middleton. See also: January | February | March.
