S
M
T
W
T
F
S
29
50°
38°
30
51°
34°
1
50°
32°
2
50°
24°
3
51°
21°
4
36°
20°
5
34°
19°
6
34°
19°
7
35°
23°
8
38°
23°
9
36°
25°
10
33°
21°
11
33°
20°
12
32°
22°
13
33°
20°
14
32°
17°
15
30°
12°
16
30°
15°
17
28°
27°
18
36°
30°
19
43°
30°
20
45°
27°
21
44°
30°
22
44°
34°
23
46°
29°
24
46°
24°
25
41°
23°
26
39°
27°
27
40°
30°
28
43°
31°
29
44°
30°
30
45°
28°
31
44°
24°
1
41°
20°
2
33°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lafayette
Lafayette's December 2026 forecast shows daily high temperatures ranging from 28° to 51°, with overnight lows between 12° and 38°. The average high for December is 40° with an average low of 25°. 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 Lafayette. See also: January | February | March.
