S
M
T
W
T
F
S
26
69°
50°
27
82°
44°
28
76°
55°
29
66°
53°
30
58°
41°
1
66°
36°
2
55°
36°
3
63°
32°
4
76°
42°
5
77°
61°
6
62°
52°
7
64°
42°
8
70°
35°
9
71°
51°
10
77°
49°
11
69°
46°
12
75°
40°
13
76°
47°
14
59°
45°
15
68°
38°
16
75°
47°
17
88°
60°
18
93°
59°
19
89°
65°
20
87°
65°
21
67°
58°
22
66°
60°
23
75°
61°
24
81°
63°
25
77°
64°
26
77°
65°
27
77°
65°
28
80°
57°
29
81°
56°
30
74°
57°
31
74°
54°
1
75°
57°
2
75°
58°
3
76°
59°
4
76°
60°
5
78°
59°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Charleston
South Charleston's May 2026 forecast shows daily high temperatures ranging from 74° to 81°, with overnight lows between 54° and 65°. The average high for May is 77° with an average low of 60°. 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 South Charleston. See also: June | July | August.
