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