S
M
T
W
T
F
S
26
90°
69°
27
90°
69°
28
89°
68°
29
88°
67°
30
87°
66°
31
85°
66°
1
87°
65°
2
86°
66°
3
87°
65°
4
86°
64°
5
86°
65°
6
87°
66°
7
85°
66°
8
79°
65°
9
80°
64°
10
81°
62°
11
82°
64°
12
86°
65°
13
85°
65°
14
84°
64°
15
83°
65°
16
82°
65°
17
80°
64°
18
84°
65°
19
86°
64°
20
86°
63°
21
76°
53°
22
77°
55°
23
78°
53°
24
77°
57°
25
79°
61°
26
85°
64°
27
85°
63°
28
87°
63°
29
88°
54°
30
84°
57°
31
78°
60°
1
77°
54°
2
85°
63°
3
85°
63°
4
87°
58°
5
86°
55°
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 76° to 90°, with overnight lows between 53° and 69°. The average high for August is 84° with an average low of 63°. 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.
