S
M
T
W
T
F
S
30
36°
26°
1
29°
15°
2
32°
20°
3
28°
20°
4
29°
7°
5
29°
4°
6
34°
28°
7
31°
17°
8
25°
5°
9
35°
5°
10
37°
22°
11
28°
20°
12
31°
19°
13
29°
12°
14
18°
7°
15
20°
13°
16
32°
20°
17
45°
25°
18
50°
29°
19
38°
21°
20
41°
21°
21
36°
16°
22
37°
19°
23
51°
33°
24
37°
28°
25
40°
27°
26
35°
29°
27
33°
28°
28
60°
31°
29
51°
21°
30
25°
18°
31
29°
15°
1
20°
9°
2
23°
15°
3
25°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Tecumseh
Tecumseh'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 Tecumseh. See also: January | February | March.
