S
M
T
W
T
F
S
26
97°
78°
27
99°
77°
28
100°
78°
29
99°
77°
30
99°
79°
31
98°
77°
1
98°
74°
2
93°
70°
3
91°
69°
4
95°
72°
5
97°
73°
6
96°
72°
7
94°
74°
8
96°
73°
9
92°
72°
10
93°
75°
11
94°
73°
12
92°
73°
13
94°
72°
14
92°
74°
15
89°
70°
16
88°
69°
17
93°
74°
18
92°
73°
19
93°
75°
20
94°
75°
21
93°
74°
22
93°
74°
23
91°
73°
24
92°
74°
25
93°
74°
26
93°
73°
27
92°
74°
28
93°
73°
29
93°
74°
30
92°
73°
31
91°
73°
1
90°
72°
2
92°
74°
3
93°
73°
4
92°
73°
5
90°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hattiesburg
Hattiesburg's August 2026 forecast shows daily high temperatures ranging from 88° to 98°, with overnight lows between 69° and 75°. The average high for August is 93° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Hattiesburg. See also: September | October | November.