S
M
T
W
T
F
S
29
68°
48°
30
73°
52°
31
77°
55°
1
79°
59°
2
77°
61°
3
79°
63°
4
79°
61°
5
79°
68°
6
70°
59°
7
68°
57°
8
64°
54°
9
70°
48°
10
74°
52°
11
79°
54°
12
78°
62°
13
80°
60°
14
82°
63°
15
83°
68°
16
81°
70°
17
83°
69°
18
85°
70°
19
78°
68°
20
77°
70°
21
78°
69°
22
80°
70°
23
81°
62°
24
78°
67°
25
79°
67°
26
79°
66°
27
78°
66°
28
75°
64°
29
72°
65°
30
74°
64°
1
75°
68°
2
79°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Charleston
Charleston's April 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 52° and 70°. The average high for April is 79° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Charleston. See also: May | June | July.