S
M
T
W
T
F
S
27
97°
64°
28
N/A
29
97°
67°
30
96°
71°
1
93°
71°
2
80°
69°
3
75°
67°
4
82°
59°
5
82°
55°
6
82°
54°
7
84°
57°
8
86°
58°
9
88°
60°
10
86°
62°
11
80°
64°
12
83°
62°
13
81°
60°
14
82°
59°
15
81°
57°
16
77°
51°
17
80°
56°
18
80°
54°
19
69°
52°
20
70°
54°
21
70°
50°
22
71°
50°
23
73°
53°
24
78°
50°
25
70°
53°
26
78°
53°
27
76°
52°
28
77°
53°
29
77°
54°
30
75°
53°
31
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mount Pleasant
Mount Pleasant's October 2026 forecast shows daily high temperatures ranging from 69° to 88°, with overnight lows between 50° and 67°. The average high for October is 78° with an average low of 56°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Mount Pleasant. See also: November | December | January.