S
M
T
W
T
F
S
26
88°
70°
27
89°
65°
28
88°
65°
29
90°
66°
30
89°
67°
31
90°
68°
1
90°
72°
2
90°
70°
3
89°
67°
4
86°
65°
5
87°
66°
6
88°
66°
7
89°
67°
8
88°
65°
9
88°
70°
10
93°
70°
11
88°
69°
12
88°
69°
13
89°
70°
14
88°
69°
15
90°
69°
16
92°
65°
17
91°
64°
18
90°
68°
19
92°
63°
20
87°
62°
21
86°
63°
22
86°
67°
23
91°
66°
24
90°
64°
25
89°
63°
26
88°
67°
27
91°
64°
28
86°
66°
29
87°
63°
30
85°
64°
31
87°
64°
1
88°
66°
2
89°
66°
3
90°
65°
4
89°
65°
5
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Pleasant
Mount Pleasant's August 2026 forecast shows daily high temperatures ranging from 84° to 93°, with overnight lows between 62° and 72°. The average high for August is 89° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mount Pleasant. See also: September | October | November.
