S
M
T
W
T
F
S
29
56°
35°
30
57°
32°
1
55°
33°
2
58°
32°
3
58°
31°
4
53°
32°
5
56°
43°
6
61°
47°
7
65°
40°
8
67°
33°
9
57°
32°
10
58°
34°
11
60°
41°
12
59°
43°
13
54°
34°
14
59°
30°
15
51°
30°
16
51°
31°
17
55°
36°
18
56°
42°
19
55°
45°
20
62°
47°
21
66°
45°
22
66°
45°
23
64°
38°
24
67°
37°
25
60°
40°
26
62°
41°
27
63°
29°
28
60°
35°
29
51°
29°
30
54°
26°
31
49°
25°
1
45°
28°
2
50°
27°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Thomas Mill
Thomas Mill's December 2026 forecast shows daily high temperatures ranging from 45° to 67°, with overnight lows between 25° and 47°. The average high for December is 58° with an average low of 36°. 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 Thomas Mill. See also: January | February | March.
