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