S
M
T
W
T
F
S
26
77°
62°
27
63°
55°
28
74°
60°
29
75°
66°
30
74°
68°
1
70°
65°
2
65°
56°
3
67°
53°
4
73°
59°
5
74°
64°
6
78°
67°
7
80°
71°
8
72°
61°
9
78°
67°
10
79°
68°
11
88°
67°
12
69°
61°
13
78°
61°
14
83°
57°
15
75°
62°
16
84°
67°
17
84°
69°
18
83°
72°
19
84°
73°
20
83°
74°
21
82°
71°
22
81°
73°
23
81°
74°
24
80°
72°
25
80°
70°
26
82°
71°
27
84°
75°
28
83°
74°
29
85°
75°
30
85°
75°
31
84°
74°
1
84°
74°
2
83°
75°
3
84°
75°
4
80°
74°
5
80°
75°
6
84°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Charleston Central
Charleston Central's May 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 57° and 75°. The average high for May is 82° with an average low of 72°. 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 Charleston Central. See also: June | July | August.