S
M
T
W
T
F
S
31
77°
72°
1
79°
70°
2
79°
66°
3
79°
61°
4
84°
59°
5
84°
61°
6
84°
64°
7
86°
70°
8
86°
72°
9
86°
72°
10
88°
72°
11
86°
75°
12
97°
77°
13
95°
75°
14
90°
75°
15
93°
75°
16
86°
73°
17
90°
75°
18
88°
72°
19
86°
73°
20
86°
73°
21
88°
73°
22
91°
73°
23
95°
77°
24
84°
73°
25
86°
72°
26
90°
73°
27
90°
77°
28
95°
79°
29
97°
77°
30
88°
73°
1
87°
74°
2
89°
77°
3
90°
77°
4
88°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Charleston
Charleston's June 2026 forecast shows daily high temperatures ranging from 87° to 90°, with overnight lows between 73° and 80°. The average high for June is 88° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Charleston. See also: July | August | September.
