S
M
T
W
T
F
S
26
80°
59°
27
78°
58°
28
80°
59°
29
79°
56°
30
75°
59°
31
82°
59°
1
78°
56°
2
76°
53°
3
76°
57°
4
79°
59°
5
77°
59°
6
76°
58°
7
77°
58°
8
76°
54°
9
75°
55°
10
77°
59°
11
76°
55°
12
75°
52°
13
76°
57°
14
80°
59°
15
77°
56°
16
75°
52°
17
75°
52°
18
76°
58°
19
75°
58°
20
75°
56°
21
76°
58°
22
73°
56°
23
73°
57°
24
74°
57°
25
73°
56°
26
76°
57°
27
76°
58°
28
80°
54°
29
80°
53°
30
79°
53°
31
80°
55°
1
80°
55°
2
79°
54°
3
79°
55°
4
78°
54°
5
76°
53°
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 73° to 82°, with overnight lows between 52° and 59°. The average high for August is 77° with an average low of 56°. 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.
