S
M
T
W
T
F
S
28
89°
71°
29
90°
74°
30
91°
74°
1
91°
76°
2
93°
74°
3
91°
72°
4
86°
70°
5
87°
66°
6
84°
66°
7
84°
66°
8
89°
69°
9
88°
71°
10
87°
69°
11
86°
67°
12
86°
67°
13
87°
67°
14
87°
66°
15
89°
67°
16
88°
66°
17
83°
63°
18
83°
64°
19
84°
70°
20
84°
70°
21
90°
69°
22
88°
70°
23
90°
70°
24
90°
69°
25
89°
70°
26
90°
71°
27
91°
71°
28
91°
70°
29
92°
71°
30
91°
70°
31
91°
70°
1
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Charleston
Charleston's July 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 63° and 72°. The average high for July is 88° with an average low of 69°. 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 Charleston. See also: August | September | October.
