S
M
T
W
T
F
S
29
53°
38°
30
56°
35°
1
47°
30°
2
52°
37°
3
51°
36°
4
52°
30°
5
43°
30°
6
46°
36°
7
42°
36°
8
43°
35°
9
47°
37°
10
52°
35°
11
43°
30°
12
39°
29°
13
49°
26°
14
37°
26°
15
38°
32°
16
38°
32°
17
46°
35°
18
51°
34°
19
46°
32°
20
45°
24°
21
35°
21°
22
44°
34°
23
49°
32°
24
41°
30°
25
36°
19°
26
37°
23°
27
38°
26°
28
39°
22°
29
39°
23°
30
38°
20°
31
38°
17°
1
37°
17°
2
35°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Old Appleton
Old Appleton's December 2026 forecast shows daily high temperatures ranging from 35° to 56°, with overnight lows between 17° and 38°. The average high for December is 43° with an average low of 29°. 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 Old Appleton. See also: January | February | March.