S
M
T
W
T
F
S
27
70°
42°
28
66°
33°
29
61°
30°
30
63°
35°
1
67°
34°
2
71°
40°
3
66°
31°
4
59°
30°
5
63°
36°
6
65°
30°
7
58°
28°
8
64°
31°
9
68°
31°
10
68°
34°
11
69°
38°
12
68°
33°
13
67°
34°
14
63°
26°
15
51°
24°
16
53°
25°
17
53°
25°
18
54°
26°
19
52°
24°
20
52°
24°
21
57°
25°
22
60°
32°
23
60°
30°
24
59°
33°
25
52°
25°
26
54°
26°
27
53°
21°
28
48°
22°
29
47°
21°
30
49°
22°
31
48°
23°
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 47° to 71°, with overnight lows between 21° and 42°. The average high for October is 59° with an average low of 29°. 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.