S
M
T
W
T
F
S
26
70°
50°
27
71°
49°
28
63°
52°
29
79°
57°
30
74°
51°
1
67°
52°
2
59°
41°
3
69°
43°
4
79°
51°
5
83°
58°
6
82°
61°
7
72°
45°
8
69°
45°
9
75°
53°
10
77°
53°
11
77°
55°
12
77°
58°
13
75°
57°
14
77°
54°
15
82°
60°
16
82°
60°
17
80°
59°
18
79°
61°
19
82°
61°
20
83°
60°
21
84°
62°
22
84°
62°
23
85°
63°
24
85°
63°
25
84°
62°
26
82°
63°
27
82°
63°
28
83°
64°
29
80°
64°
30
82°
63°
31
84°
64°
1
85°
64°
2
86°
65°
3
87°
64°
4
80°
61°
5
78°
59°
6
78°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Pleasant
Mount Pleasant's May 2026 forecast shows daily high temperatures ranging from 59° to 87°, with overnight lows between 41° and 65°. The average high for May is 79° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Mount Pleasant. See also: June | July | August.
