S
M
T
W
T
F
S
29
62°
44°
30
72°
37°
1
63°
43°
2
59°
42°
3
69°
31°
4
70°
31°
5
55°
32°
6
57°
36°
7
61°
35°
8
58°
33°
9
58°
32°
10
57°
31°
11
56°
30°
12
54°
31°
13
55°
31°
14
56°
32°
15
57°
34°
16
57°
41°
17
58°
36°
18
63°
34°
19
63°
35°
20
57°
32°
21
55°
32°
22
55°
36°
23
56°
37°
24
57°
32°
25
55°
30°
26
53°
31°
27
53°
31°
28
54°
36°
29
51°
37°
30
56°
28°
31
53°
26°
1
Hist. Avg.
58°
38°
2
Hist. Avg.
58°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Thompson
Thompson's December 2026 forecast shows daily high temperatures ranging from 51° to 72°, with overnight lows between 26° and 44°. The average high for December is 58° with an average low of 34°. 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 Thompson. See also: January | February | March.