Charleston weather live forecast

Today's maximum temperature in Charleston is expected to be 28°C. Select a day from the live weather forecast for Charleston, South Carolina, USA for more weather parameters.

Sunday
20th Sep
28

25

5

4
Monday
21st Sep
29

25

5

7
Tuesday
22nd Sep
29

24

5

6
Wednesday
23rd Sep
28

23

4

7
Thursday
24th Sep
26

21

6

7

5-day weather forecast updated at 04:00 on Sunday 20th September 2026 GMT

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The 5-day weather forecast for South Carolina (Charleston) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Charleston weather forecast by day

Below are the detailed weather forecasts for Charleston for the next 5 days.

Charleston weather for Sunday 20th September 2026

Expect isolated thunderstorms in Charleston, South Carolina with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 95% chance of some rain and little or no wind of 5 kph from the north-east.

28
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
4
UV index (Moderate)
95
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
5
kph wind from NE

Charleston weather for Monday 21st September 2026

Expect isolated thunderstorms in Charleston, South Carolina with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 39% chance of some rain and a light breeze of 7 kph from the east.

29
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
39
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from E

Charleston weather for Tuesday 22nd September 2026

Expect isolated thunderstorms in Charleston, South Carolina with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 73% chance of some rain and little or no wind of 6 kph from the east.

29
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
6
UV index (High)
73
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from E

Charleston weather for Wednesday 23rd September 2026

Expect isolated thunderstorms in Charleston, South Carolina with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 66% chance of some rain and a light breeze of 11 kph from the north-east.

28
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
66
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
11
kph wind from NE

Charleston weather for Thursday 24th September 2026

Expect broken clouds in Charleston, South Carolina with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north.