S
M
T
W
T
F
S
29
38°
18°
30
39°
21°
1
39°
21°
2
38°
19°
3
36°
21°
4
37°
21°
5
39°
23°
6
38°
14°
7
38°
9°
8
26°
17°
9
28°
17°
10
34°
15°
11
32°
17°
12
29°
18°
13
32°
18°
14
34°
12°
15
34°
9°
16
29°
14°
17
28°
7°
18
28°
15°
19
27°
15°
20
31°
16°
21
33°
15°
22
32°
11°
23
32°
5°
24
23°
12°
25
26°
13°
26
30°
14°
27
33°
12°
28
29°
5°
29
24°
10°
30
24°
0°
31
30°
-5°
1
32°
-5°
2
14°
-2°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Appleton
Appleton's December 2026 forecast shows daily high temperatures ranging from 14° to 39°, with overnight lows between -5° and 23°. The average high for December is 31° with an average low of 13°. 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 Appleton. See also: January | February | March.
