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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC
Issued by: National Weather Service Charleston, SC
Last Update: 2:40 am EDT May 21, 2026		Print

Today

Today: Areas of fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 87. Light and variable wind becoming south 9 to 14 mph in the afternoon.

High: 87 °F

Areas Fog
then Sunny


Tonight

Tonight: Increasing clouds, with a low around 69. South wind 8 to 13 mph becoming light after midnight.

Low: 69 °F

Increasing
Clouds


Friday

Friday: A slight chance of showers between 10am and 11am. Mostly sunny, with a high near 88. Light south wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 20%.

High: 88 °F

Slight Chance
Showers then
Mostly Sunny

Friday
Night

Friday Night: A slight chance of showers and thunderstorms between 2am and 5am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 75. South wind 5 to 8 mph. Chance of precipitation is 20%.

Low: 75 °F

Mostly Cloudy
then Slight
Chance
T-storms

Saturday

Saturday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

High: 87 °F

Chance
Showers then
Chance
T-storms

Saturday
Night

Saturday Night: A slight chance of thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.

Low: 75 °F

Mostly Cloudy
then Chance
Showers

Sunday

Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

High: 87 °F

Chance
T-storms


Sunday
Night

Sunday Night: Mostly cloudy, with a low around 75.

Low: 75 °F

Mostly Cloudy



Memorial
Day

Memorial Day: A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 87.

High: 87 °F

Slight Chance
T-storms



Today: Areas of fog before 8am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 87. Light and variable wind becoming south 9 to 14 mph in the afternoon.

Tonight: Increasing clouds, with a low around 69. South wind 8 to 13 mph becoming light after midnight.

Friday: A slight chance of showers between 10am and 11am. Mostly sunny, with a high near 88. Light south wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 20%.

Friday Night: A slight chance of showers and thunderstorms between 2am and 5am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 75. South wind 5 to 8 mph. Chance of precipitation is 20%.

Saturday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night: A slight chance of thunderstorms before 8pm, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.

Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

Sunday Night: Mostly cloudy, with a low around 75.

Memorial Day: A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 87.

Monday Night: Partly cloudy, with a low around 75.

Tuesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

Tuesday Night: Partly cloudy, with a low around 73.

Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.


Charleston SCSimilar City Names
 32.79°N 80.01°W (Elev. 10 ft)

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