S
M
T
W
T
F
S
27
77°
40°
28
78°
43°
29
78°
47°
30
65°
59°
1
66°
60°
2
67°
42°
3
66°
37°
4
70°
47°
5
64°
37°
6
71°
34°
7
76°
51°
8
68°
42°
9
71°
40°
10
81°
48°
11
73°
48°
12
87°
65°
13
77°
52°
14
65°
43°
15
59°
48°
16
55°
31°
17
56°
34°
18
61°
39°
19
65°
42°
20
68°
44°
21
68°
49°
22
63°
47°
23
60°
44°
24
58°
43°
25
55°
35°
26
56°
39°
27
56°
34°
28
48°
33°
29
49°
41°
30
53°
40°
31
57°
35°
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 48° to 87°, with overnight lows between 31° and 65°. The average high for October is 61° with an average low of 42°. 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.