S
M
T
W
T
F
S
26
82°
63°
27
82°
55°
28
76°
56°
29
76°
60°
30
77°
58°
31
77°
60°
1
79°
56°
2
78°
55°
3
77°
54°
4
76°
53°
5
77°
54°
6
80°
58°
7
81°
55°
8
79°
53°
9
80°
56°
10
81°
58°
11
83°
59°
12
83°
61°
13
82°
62°
14
83°
61°
15
81°
55°
16
82°
52°
17
74°
53°
18
74°
54°
19
72°
54°
20
73°
53°
21
72°
58°
22
76°
59°
23
75°
60°
24
82°
59°
25
81°
53°
26
81°
51°
27
73°
49°
28
71°
49°
29
72°
54°
30
72°
59°
31
79°
59°
1
78°
57°
2
79°
51°
3
75°
54°
4
77°
56°
5
77°
55°
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 71° to 83°, with overnight lows between 49° and 63°. The average high for August is 78° 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.
