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