S
M
T
W
T
F
S
29
38°
27°
30
36°
26°
1
38°
26°
2
41°
27°
3
44°
27°
4
42°
26°
5
41°
26°
6
38°
27°
7
39°
27°
8
38°
30°
9
36°
26°
10
35°
25°
11
38°
25°
12
41°
26°
13
38°
25°
14
38°
25°
15
37°
24°
16
34°
24°
17
36°
25°
18
36°
25°
19
37°
24°
20
34°
24°
21
39°
34°
22
43°
28°
23
43°
28°
24
42°
30°
25
35°
25°
26
34°
28°
27
35°
34°
28
37°
34°
29
38°
32°
30
40°
32°
31
37°
33°
1
38°
28°
2
39°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Weitnau
Weitnau's December 2026 forecast shows daily high temperatures ranging from 34° to 44°, with overnight lows between 24° and 34°. The average high for December is 38° with an average low of 28°. 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 Weitnau. See also: January | February | March.