S
M
T
W
T
F
S
28
90°
72°
29
87°
71°
30
88°
70°
1
86°
68°
2
86°
69°
3
87°
71°
4
89°
72°
5
88°
71°
6
87°
69°
7
87°
70°
8
88°
72°
9
87°
73°
10
87°
73°
11
88°
72°
12
88°
72°
13
90°
71°
14
89°
70°
15
90°
69°
16
89°
70°
17
88°
68°
18
89°
69°
19
89°
69°
20
90°
70°
21
90°
71°
22
89°
72°
23
90°
70°
24
89°
70°
25
88°
71°
26
88°
69°
27
89°
70°
28
89°
70°
29
91°
71°
30
92°
71°
31
91°
73°
1
92°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Summerville
Summerville's July 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 68° and 73°. The average high for July 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 July weather will actually feel in Summerville. See also: August | September | October.