S
M
T
W
T
F
S
31
81°
61°
1
83°
62°
2
81°
59°
3
82°
56°
4
82°
58°
5
82°
67°
6
89°
71°
7
89°
72°
8
79°
71°
9
89°
72°
10
90°
76°
11
89°
64°
12
81°
65°
13
80°
62°
14
74°
61°
15
74°
59°
16
76°
57°
17
79°
56°
18
75°
61°
19
81°
58°
20
82°
60°
21
78°
60°
22
75°
53°
23
76°
60°
24
78°
61°
25
82°
58°
26
79°
63°
27
84°
68°
28
89°
71°
29
90°
69°
30
87°
68°
1
84°
67°
2
85°
67°
3
88°
66°
4
84°
70°
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 90°, with overnight lows between 53° and 71°. The average high for June is 83° with an average low of 64°. 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.
