S
M
T
W
T
F
S
29
41°
34°
30
43°
37°
1
45°
37°
2
43°
35°
3
39°
33°
4
35°
30°
5
35°
27°
6
34°
26°
7
34°
28°
8
35°
29°
9
34°
24°
10
32°
24°
11
33°
25°
12
33°
24°
13
32°
24°
14
32°
25°
15
33°
26°
16
38°
33°
17
39°
36°
18
39°
29°
19
38°
29°
20
33°
30°
21
43°
33°
22
42°
33°
23
40°
32°
24
38°
36°
25
42°
35°
26
43°
34°
27
41°
33°
28
40°
33°
29
40°
34°
30
43°
33°
31
42°
32°
1
41°
31°
2
39°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Cornberg
Cornberg's December 2026 forecast shows daily high temperatures ranging from 32° to 45°, with overnight lows between 24° and 37°. The average high for December is 38° with an average low of 31°. 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 Cornberg. See also: January | February | March.