S
M
T
W
T
F
S
26
70°
50°
27
71°
49°
28
63°
52°
29
79°
57°
30
74°
51°
1
63°
51°
2
58°
35°
3
67°
36°
4
79°
39°
5
81°
51°
6
75°
60°
7
73°
46°
8
70°
47°
9
71°
49°
10
81°
53°
11
66°
42°
12
71°
41°
13
77°
41°
14
73°
41°
15
76°
52°
16
87°
61°
17
90°
63°
18
90°
65°
19
92°
66°
20
92°
67°
21
88°
64°
22
79°
62°
23
82°
60°
24
81°
58°
25
83°
62°
26
85°
63°
27
87°
59°
28
86°
63°
29
86°
64°
30
85°
64°
31
86°
63°
1
83°
64°
2
85°
64°
3
84°
63°
4
80°
64°
5
84°
65°
6
88°
66°
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 73° to 92°, with overnight lows between 41° and 67°. The average high for May is 85° with an average low of 62°. 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.
