S
M
T
W
T
F
S
26
82°
63°
27
84°
66°
28
81°
64°
29
77°
59°
30
82°
55°
31
84°
61°
1
77°
70°
2
77°
63°
3
79°
59°
4
83°
65°
5
85°
63°
6
82°
65°
7
80°
65°
8
85°
63°
9
86°
68°
10
87°
68°
11
80°
65°
12
79°
62°
13
80°
63°
14
79°
63°
15
79°
62°
16
77°
60°
17
79°
66°
18
84°
67°
19
85°
66°
20
84°
65°
21
82°
65°
22
84°
64°
23
85°
66°
24
84°
66°
25
83°
65°
26
81°
65°
27
80°
64°
28
79°
63°
29
80°
63°
30
79°
64°
31
80°
63°
1
83°
62°
2
78°
58°
3
76°
58°
4
77°
60°
5
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Huntsville
Huntsville's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 58° and 68°. The average high for August is 81° with an average low of 64°. 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 Huntsville. See also: September | October | November.