S
M
T
W
T
F
S
31
81°
71°
1
80°
69°
2
79°
69°
3
80°
70°
4
83°
70°
5
83°
72°
6
82°
71°
7
82°
71°
8
81°
72°
9
83°
75°
10
86°
73°
11
83°
72°
12
82°
71°
13
82°
72°
14
83°
74°
15
81°
74°
16
86°
72°
17
86°
73°
18
87°
74°
19
86°
75°
20
88°
73°
21
83°
72°
22
84°
77°
23
87°
78°
24
90°
78°
25
90°
77°
26
89°
75°
27
85°
76°
28
86°
77°
29
89°
75°
30
89°
75°
1
86°
77°
2
87°
76°
3
88°
75°
4
87°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mount Pleasant
Mount Pleasant's June 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 69° and 78°. The average high for June is 85° with an average low of 74°. 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 Mount Pleasant. See also: July | August | September.