S
M
T
W
T
F
S
29
62°
44°
30
66°
48°
1
67°
48°
2
69°
49°
3
68°
50°
4
66°
47°
5
63°
43°
6
62°
42°
7
61°
38°
8
56°
35°
9
56°
35°
10
55°
34°
11
54°
34°
12
54°
35°
13
55°
39°
14
58°
47°
15
62°
37°
16
53°
38°
17
54°
36°
18
61°
40°
19
64°
45°
20
61°
47°
21
53°
34°
22
55°
48°
23
63°
36°
24
66°
32°
25
53°
32°
26
54°
35°
27
56°
45°
28
65°
48°
29
66°
41°
30
66°
33°
31
59°
43°
1
57°
31°
2
54°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Hattiesburg
Hattiesburg's December 2026 forecast shows daily high temperatures ranging from 53° to 69°, with overnight lows between 28° and 50°. The average high for December is 60° with an average low of 40°. 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 Hattiesburg. See also: January | February | March.
