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°
65°
21
76°
62°
22
71°
59°
23
79°
54°
24
79°
61°
25
81°
67°
26
74°
65°
27
79°
68°
28
89°
75°
29
91°
73°
30
97°
75°
1
97°
74°
2
95°
71°
3
91°
70°
4
88°
69°
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 74° to 97°, with overnight lows between 65° and 75°. The average high for June is 88° with an average low of 71°. 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.
