S
M
T
W
T
F
S
29
39°
27°
30
40°
26°
1
39°
27°
2
39°
21°
3
38°
20°
4
35°
26°
5
37°
31°
6
42°
37°
7
48°
30°
8
51°
26°
9
49°
24°
10
35°
23°
11
36°
22°
12
37°
23°
13
35°
25°
14
36°
23°
15
34°
19°
16
32°
21°
17
32°
24°
18
34°
26°
19
34°
29°
20
40°
29°
21
47°
22°
22
46°
24°
23
35°
30°
24
44°
28°
25
46°
26°
26
41°
26°
27
36°
16°
28
37°
15°
29
29°
12°
30
31°
9°
31
30°
10°
1
23°
12°
2
26°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Forest
Forest's December 2026 forecast shows daily high temperatures ranging from 23° to 51°, with overnight lows between 9° and 37°. The average high for December is 38° with an average low of 23°. 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 Forest. See also: January | February | March.
