S
M
T
W
T
F
S
29
72°
49°
30
70°
51°
1
71°
43°
2
60°
38°
3
58°
37°
4
59°
42°
5
63°
45°
6
60°
40°
7
57°
38°
8
56°
38°
9
56°
36°
10
55°
36°
11
57°
37°
12
58°
36°
13
60°
38°
14
60°
45°
15
61°
43°
16
69°
40°
17
64°
39°
18
63°
36°
19
58°
33°
20
55°
34°
21
55°
36°
22
57°
35°
23
58°
35°
24
56°
34°
25
57°
34°
26
56°
35°
27
56°
34°
28
57°
36°
29
58°
38°
30
58°
35°
31
59°
33°
1
55°
32°
2
54°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Baton Rouge
Baton Rouge's December 2026 forecast shows daily high temperatures ranging from 54° to 72°, with overnight lows between 32° and 51°. The average high for December is 59° with an average low of 38°. 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 Baton Rouge. See also: January | February | March.
