S
M
T
W
T
F
S
31
81°
59°
1
79°
56°
2
77°
50°
3
80°
54°
4
84°
61°
5
85°
63°
6
78°
64°
7
83°
63°
8
86°
63°
9
86°
64°
10
87°
64°
11
86°
60°
12
82°
62°
13
83°
65°
14
85°
65°
15
83°
64°
16
80°
65°
17
80°
65°
18
81°
62°
19
78°
60°
20
78°
61°
21
79°
66°
22
80°
65°
23
80°
65°
24
82°
62°
25
81°
65°
26
83°
67°
27
84°
66°
28
86°
68°
29
87°
68°
30
87°
67°
1
88°
68°
2
82°
68°
3
82°
66°
4
81°
63°
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 77° to 88°, with overnight lows between 50° and 68°. The average high for June is 82° with an average low of 63°. 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.
