Average data for 10 years
1 May
Thursday
+24°
+20°
2 May
Friday
+25°
+20°
3 May
Saturday
+24°
+20°
4 May
Sunday
+24°
+20°
5 May
Monday
+25°
+19°
6 May
Tuesday
+24°
+19°
7 May
Wednesday
+26°
+19°
8 May
Thursday
+26°
+21°
9 May
Friday
+27°
+22°
10 May
Saturday
+27°
+22°
11 May
Sunday
+26°
+21°
12 May
Monday
+25°
+21°
13 May
Tuesday
+25°
+20°
14 May
Wednesday
+25°
+21°
15 May
Thursday
+25°
+21°
16 May
Friday
+25°
+21°
17 May
Saturday
+24°
+20°
18 May
Sunday
+25°
+20°
19 May
Monday
+25°
+21°
20 May
Tuesday
+27°
+21°
21 May
Wednesday
+27°
+22°
22 May
Thursday
+27°
+22°
23 May
Friday
+26°
+22°
24 May
Saturday
+26°
+21°
25 May
Sunday
+27°
+21°
26 May
Monday
+27°
+22°
27 May
Tuesday
+28°
+23°
28 May
Wednesday
+27°
+23°
29 May
Thursday
+27°
+23°
30 May
Friday
+28°
+23°
31 May
Saturday
+28°
+24°
In May, the weather in Charleston is typically warm. Average daily high temperature in May is about 26 degrees above zero. On average, Charleston has 15 sunny, 8 rainy, and 8 partly cloudy days in May. The rains are usually heavy.