S
M
T
W
T
F
S
29
20°
3°
30
14°
0°
1
18°
5°
2
20°
4°
3
20°
2°
4
18°
1°
5
12°
0°
6
16°
-1°
7
16°
2°
8
19°
4°
9
18°
3°
10
19°
3°
11
18°
2°
12
17°
-1°
13
15°
-2°
14
3°
-6°
15
8°
-5°
16
11°
-6°
17
12°
-9°
18
11°
-21°
19
9°
-12°
20
2°
-6°
21
14°
-15°
22
14°
-12°
23
1°
-8°
24
10°
-6°
25
12°
-7°
26
12°
-9°
27
13°
-11°
28
8°
-20°
29
4°
-21°
30
3°
-17°
31
4°
-11°
1
2°
-10°
2
7°
-11°
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 1° to 20°, with overnight lows between -21° and 5°. The average high for December is 12° with an average low of -6°. 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.
