S
M
T
W
T
F
S
31
81°
61°
1
83°
57°
2
80°
53°
3
81°
60°
4
84°
61°
5
84°
64°
6
86°
66°
7
86°
69°
8
85°
68°
9
84°
67°
10
86°
65°
11
86°
66°
12
82°
62°
13
83°
64°
14
86°
63°
15
84°
61°
16
80°
60°
17
79°
61°
18
81°
65°
19
80°
66°
20
80°
67°
21
82°
66°
22
84°
68°
23
83°
66°
24
84°
68°
25
86°
68°
26
87°
69°
27
86°
69°
28
84°
67°
29
84°
66°
30
83°
63°
1
83°
63°
2
84°
68°
3
84°
69°
4
85°
64°
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 79° to 87°, with overnight lows between 53° and 69°. The average high for June is 84° with an average low of 65°. 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.
