S
M
T
W
T
F
S
30
32°
17°
1
26°
16°
2
23°
20°
3
32°
20°
4
25°
2°
5
31°
0°
6
39°
30°
7
36°
21°
8
26°
10°
9
40°
26°
10
43°
30°
11
30°
26°
12
31°
28°
13
30°
2°
14
4°
-6°
15
30°
-1°
16
44°
21°
17
47°
34°
18
54°
25°
19
32°
21°
20
47°
31°
21
40°
23°
22
46°
30°
23
60°
37°
24
58°
34°
25
58°
51°
26
61°
46°
27
60°
44°
28
70°
22°
29
22°
13°
30
32°
14°
31
37°
28°
1
34°
25°
2
32°
26°
3
36°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Assumption
Assumption's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Assumption. See also: January | February | March.
