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