S
M
T
W
T
F
S
26
85°
64°
27
89°
64°
28
89°
67°
29
86°
66°
30
72°
63°
1
63°
52°
2
71°
49°
3
76°
45°
4
80°
47°
5
83°
53°
6
84°
69°
7
74°
62°
8
67°
61°
9
69°
64°
10
84°
64°
11
82°
67°
12
82°
65°
13
83°
62°
14
83°
59°
15
87°
55°
16
84°
62°
17
86°
60°
18
90°
65°
19
90°
71°
20
87°
69°
21
86°
69°
22
80°
70°
23
81°
70°
24
83°
71°
25
84°
71°
26
82°
72°
27
80°
70°
28
86°
69°
29
84°
69°
30
84°
68°
31
86°
68°
1
89°
67°
2
90°
70°
3
85°
69°
4
85°
69°
5
86°
70°
6
85°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hattiesburg
Hattiesburg's May 2026 forecast shows daily high temperatures ranging from 80° to 90°, with overnight lows between 67° and 72°. The average high for May is 85° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hattiesburg. See also: June | July | August.
