S
M
T
W
T
F
S
28
93°
75°
29
93°
75°
30
95°
71°
1
98°
73°
2
94°
71°
3
95°
72°
4
92°
74°
5
91°
73°
6
92°
71°
7
90°
70°
8
92°
71°
9
94°
72°
10
94°
75°
11
94°
72°
12
91°
71°
13
91°
72°
14
82°
72°
15
87°
71°
16
90°
70°
17
94°
73°
18
95°
72°
19
96°
75°
20
96°
74°
21
98°
75°
22
95°
77°
23
90°
76°
24
93°
77°
25
94°
77°
26
97°
76°
27
98°
76°
28
98°
75°
29
95°
75°
30
94°
74°
31
94°
75°
1
94°
70°
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 ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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.