S
M
T
W
T
F
S
29
37°
33°
30
45°
34°
1
47°
32°
2
47°
30°
3
37°
29°
4
39°
32°
5
46°
27°
6
34°
22°
7
33°
23°
8
40°
31°
9
45°
31°
10
44°
30°
11
43°
32°
12
46°
30°
13
44°
27°
14
39°
16°
15
30°
16°
16
30°
22°
17
35°
27°
18
41°
28°
19
43°
28°
20
42°
27°
21
43°
28°
22
43°
25°
23
35°
25°
24
40°
27°
25
29°
13°
26
30°
15°
27
29°
15°
28
33°
22°
29
32°
26°
30
41°
25°
31
40°
25°
1
39°
24°
2
40°
21°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Thomaston
Thomaston's December 2026 forecast shows daily high temperatures ranging from 29° to 47°, with overnight lows between 13° and 34°. The average high for December is 39° with an average low of 26°. 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 Thomaston. See also: January | February | March.
