S
M
T
W
T
F
S
30
48°
43°
1
43°
32°
2
45°
30°
3
43°
34°
4
41°
32°
5
41°
32°
6
48°
32°
7
55°
48°
8
59°
52°
9
57°
48°
10
52°
46°
11
52°
37°
12
52°
36°
13
43°
39°
14
46°
39°
15
46°
32°
16
36°
32°
17
43°
32°
18
52°
41°
19
52°
45°
20
50°
41°
21
52°
34°
22
39°
28°
23
43°
39°
24
41°
34°
25
39°
30°
26
39°
25°
27
41°
28°
28
43°
27°
29
37°
21°
30
39°
27°
31
37°
19°
1
36°
32°
2
41°
32°
3
32°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Mannheim
Mannheim's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Mannheim. See also: January | February | March.
