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