S
M
T
W
T
F
S
28
98°
78°
29
98°
77°
30
98°
78°
1
96°
78°
2
97°
79°
3
100°
81°
4
100°
79°
5
100°
78°
6
98°
79°
7
99°
78°
8
101°
80°
9
101°
80°
10
102°
79°
11
102°
78°
12
96°
77°
13
98°
79°
14
99°
79°
15
99°
78°
16
100°
79°
17
100°
76°
18
92°
75°
19
91°
75°
20
92°
76°
21
93°
78°
22
93°
76°
23
94°
79°
24
94°
79°
25
98°
78°
26
99°
79°
27
99°
80°
28
100°
79°
29
101°
80°
30
101°
81°
31
100°
80°
1
101°
81°
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 91° to 102°, with overnight lows between 75° and 81°. The average high for July is 98° 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.
