S
M
T
W
T
F
S
26
90°
69°
27
84°
66°
28
85°
65°
29
80°
64°
30
80°
64°
31
81°
65°
1
80°
67°
2
87°
66°
3
87°
66°
4
86°
64°
5
86°
66°
6
88°
67°
7
88°
67°
8
86°
66°
9
85°
62°
10
79°
58°
11
81°
65°
12
80°
65°
13
85°
64°
14
79°
57°
15
79°
58°
16
80°
60°
17
79°
60°
18
79°
60°
19
83°
62°
20
85°
64°
21
85°
62°
22
80°
63°
23
85°
64°
24
85°
62°
25
87°
60°
26
87°
62°
27
86°
55°
28
78°
54°
29
76°
53°
30
77°
58°
31
78°
60°
1
80°
53°
2
80°
50°
3
75°
49°
4
74°
50°
5
74°
51°
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 74° to 90°, with overnight lows between 49° and 69°. The average high for August is 82° with an average low of 61°. 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.
