S
M
T
W
T
F
S
28
95°
79°
29
97°
77°
30
N/A
1
87°
73°
2
89°
77°
3
90°
77°
4
90°
80°
5
89°
79°
6
90°
80°
7
89°
79°
8
91°
78°
9
88°
78°
10
86°
77°
11
88°
78°
12
89°
78°
13
88°
77°
14
89°
77°
15
84°
76°
16
85°
76°
17
85°
77°
18
86°
77°
19
86°
76°
20
87°
78°
21
87°
80°
22
85°
79°
23
86°
79°
24
87°
78°
25
87°
78°
26
86°
79°
27
85°
79°
28
84°
78°
29
85°
79°
30
87°
78°
31
85°
75°
1
85°
75°
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 84° to 91°, with overnight lows between 73° and 80°. The average high for July is 87° with an average low of 78°. 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.
