S
M
T
W
T
F
S
26
55°
44°
27
70°
37°
28
63°
49°
29
61°
49°
30
67°
40°
1
66°
36°
2
56°
43°
3
63°
40°
4
78°
42°
5
84°
58°
6
70°
56°
7
70°
52°
8
72°
39°
9
71°
50°
10
76°
46°
11
65°
51°
12
72°
36°
13
71°
50°
14
60°
47°
15
72°
52°
16
82°
45°
17
87°
56°
18
96°
66°
19
97°
68°
20
90°
55°
21
62°
50°
22
64°
48°
23
68°
57°
24
78°
58°
25
76°
60°
26
80°
56°
27
76°
57°
28
77°
55°
29
79°
56°
30
79°
55°
31
80°
54°
1
81°
58°
2
77°
59°
3
74°
59°
4
78°
58°
5
75°
55°
6
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Charles Town
Charles Town's May 2026 forecast shows daily high temperatures ranging from 62° to 97°, with overnight lows between 48° and 68°. The average high for May is 78° with an average low of 57°. 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 Charles Town. See also: June | July | August.