S
M
T
W
T
F
S
26
82°
60°
27
84°
65°
28
83°
67°
29
81°
60°
30
86°
56°
31
86°
62°
1
77°
70°
2
76°
64°
3
80°
61°
4
82°
54°
5
85°
58°
6
87°
65°
7
85°
69°
8
88°
68°
9
85°
59°
10
86°
68°
11
77°
65°
12
80°
67°
13
82°
68°
14
82°
61°
15
80°
66°
16
86°
63°
17
81°
59°
18
80°
59°
19
82°
62°
20
82°
65°
21
82°
64°
22
83°
62°
23
79°
63°
24
81°
51°
25
79°
62°
26
83°
65°
27
83°
66°
28
85°
65°
29
79°
61°
30
77°
60°
31
77°
60°
1
78°
64°
2
80°
64°
3
84°
65°
4
83°
64°
5
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in McComb
McComb's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 51° and 68°. The average high for August is 81° with an average low of 63°. 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 McComb. See also: September | October | November.