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