S
M
T
W
T
F
S
26
89°
72°
27
90°
72°
28
88°
70°
29
90°
72°
30
91°
73°
31
92°
73°
1
91°
73°
2
91°
72°
3
87°
72°
4
87°
73°
5
90°
73°
6
92°
72°
7
92°
73°
8
91°
72°
9
87°
71°
10
87°
71°
11
89°
72°
12
87°
71°
13
86°
72°
14
87°
72°
15
91°
71°
16
91°
72°
17
90°
72°
18
91°
71°
19
91°
72°
20
90°
73°
21
91°
72°
22
91°
72°
23
90°
71°
24
91°
72°
25
90°
71°
26
90°
72°
27
89°
70°
28
85°
65°
29
88°
65°
30
90°
67°
31
89°
66°
1
89°
68°
2
88°
66°
3
87°
68°
4
89°
67°
5
88°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Summerville
Summerville's August 2026 forecast shows daily high temperatures ranging from 85° to 92°, with overnight lows between 65° and 73°. The average high for August is 89° with an average low of 71°. 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 Summerville. See also: September | October | November.
