S
M
T
W
T
F
S
26
89°
70°
27
86°
61°
28
86°
62°
29
88°
67°
30
91°
65°
31
90°
70°
1
91°
64°
2
89°
65°
3
86°
64°
4
84°
62°
5
85°
61°
6
85°
62°
7
86°
62°
8
85°
63°
9
86°
67°
10
86°
64°
11
87°
68°
12
89°
68°
13
91°
67°
14
91°
65°
15
90°
65°
16
89°
66°
17
87°
66°
18
90°
65°
19
90°
61°
20
87°
60°
21
84°
60°
22
85°
62°
23
87°
61°
24
89°
65°
25
88°
64°
26
89°
65°
27
89°
64°
28
87°
61°
29
83°
65°
30
86°
64°
31
86°
64°
1
87°
63°
2
87°
63°
3
84°
62°
4
85°
60°
5
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Summersville
Summersville's August 2026 forecast shows daily high temperatures ranging from 79° to 91°, with overnight lows between 57° and 70°. The average high for August is 87° 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 Summersville. See also: September | October | November.
