S
M
T
W
T
F
S
26
79°
66°
27
78°
66°
28
75°
64°
29
72°
65°
30
74°
64°
1
75°
67°
2
79°
68°
3
79°
68°
4
78°
65°
5
77°
67°
6
77°
68°
7
78°
69°
8
80°
69°
9
79°
68°
10
81°
69°
11
75°
69°
12
77°
70°
13
77°
70°
14
80°
71°
15
82°
72°
16
82°
72°
17
81°
71°
18
82°
72°
19
82°
72°
20
81°
71°
21
80°
71°
22
78°
65°
23
78°
66°
24
79°
67°
25
78°
69°
26
77°
68°
27
79°
69°
28
79°
68°
29
80°
71°
30
80°
73°
31
81°
71°
1
80°
69°
2
79°
69°
3
80°
70°
4
83°
70°
5
83°
72°
6
82°
71°
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 72° to 83°, with overnight lows between 64° and 73°. The average high for May is 79° with an average low of 69°. 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.
