S
M
T
W
T
F
S
31
80°
48°
1
76°
52°
2
78°
50°
3
80°
50°
4
84°
50°
5
85°
55°
6
86°
61°
7
88°
69°
8
90°
66°
9
84°
70°
10
87°
70°
11
90°
70°
12
87°
69°
13
85°
64°
14
84°
62°
15
75°
52°
16
81°
62°
17
86°
74°
18
85°
65°
19
79°
56°
20
79°
58°
21
80°
63°
22
79°
65°
23
84°
63°
24
80°
63°
25
82°
62°
26
84°
61°
27
85°
65°
28
86°
64°
29
80°
61°
30
81°
62°
1
81°
61°
2
82°
66°
3
87°
68°
4
83°
68°
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 75° to 87°, with overnight lows between 52° and 74°. 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.
