S
M
T
W
T
F
S
29
47°
35°
30
45°
32°
1
42°
30°
2
46°
36°
3
47°
36°
4
46°
34°
5
45°
30°
6
39°
26°
7
35°
28°
8
38°
21°
9
31°
23°
10
32°
22°
11
33°
27°
12
37°
27°
13
39°
26°
14
40°
31°
15
38°
30°
16
40°
30°
17
41°
29°
18
40°
29°
19
39°
28°
20
34°
27°
21
34°
24°
22
31°
20°
23
31°
16°
24
28°
15°
25
27°
14°
26
28°
16°
27
26°
25°
28
36°
25°
29
35°
13°
30
39°
11°
31
32°
10°
1
22°
10°
2
22°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lansing
Lansing's December 2026 forecast shows daily high temperatures ranging from 22° to 47°, with overnight lows between 10° and 36°. The average high for December is 36° with an average low of 24°. 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 Lansing. See also: January | February | March.
