S
M
T
W
T
F
S
29
43°
23°
30
43°
23°
1
46°
26°
2
47°
14°
3
44°
12°
4
37°
14°
5
36°
14°
6
35°
12°
7
34°
8°
8
35°
7°
9
33°
7°
10
30°
8°
11
29°
8°
12
31°
11°
13
32°
17°
14
34°
20°
15
36°
20°
16
38°
22°
17
39°
22°
18
40°
24°
19
41°
19°
20
42°
18°
21
41°
22°
22
41°
14°
23
37°
10°
24
36°
9°
25
30°
11°
26
32°
12°
27
33°
20°
28
36°
17°
29
39°
16°
30
31°
3°
31
28°
2°
1
Hist. Avg.
34°
15°
2
Hist. Avg.
34°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Tecumseh
Tecumseh's December 2026 forecast shows daily high temperatures ranging from 28° to 47°, with overnight lows between 2° and 26°. The average high for December is 37° with an average low of 15°. 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.
