S
M
T
W
T
F
S
31
84°
74°
1
84°
74°
2
83°
75°
3
84°
75°
4
80°
74°
5
80°
75°
6
84°
75°
7
86°
76°
8
86°
77°
9
87°
77°
10
87°
75°
11
86°
76°
12
81°
76°
13
83°
75°
14
86°
76°
15
87°
73°
16
80°
72°
17
81°
73°
18
80°
76°
19
82°
77°
20
82°
77°
21
85°
78°
22
87°
78°
23
88°
77°
24
87°
78°
25
88°
78°
26
84°
74°
27
85°
75°
28
84°
77°
29
87°
78°
30
89°
79°
1
88°
78°
2
88°
78°
3
87°
77°
4
89°
78°
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 80° to 89°, with overnight lows between 72° and 79°. The average high for June is 85° with an average low of 76°. 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.
