S
M
T
W
T
F
S
29
41°
29°
30
39°
30°
1
39°
29°
2
40°
29°
3
44°
31°
4
44°
30°
5
43°
32°
6
39°
32°
7
42°
36°
8
45°
36°
9
43°
30°
10
41°
29°
11
39°
28°
12
43°
29°
13
38°
28°
14
37°
28°
15
37°
29°
16
36°
27°
17
37°
28°
18
37°
28°
19
39°
29°
20
37°
29°
21
44°
37°
22
46°
35°
23
46°
34°
24
45°
34°
25
38°
31°
26
37°
33°
27
40°
37°
28
42°
37°
29
45°
36°
30
46°
36°
31
44°
35°
1
43°
34°
2
44°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Forst
Forst's December 2026 forecast shows daily high temperatures ranging from 36° to 46°, with overnight lows between 27° and 37°. The average high for December is 41° with an average low of 32°. 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 Forst. See also: January | February | March.