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CHARLESTON 7 Day Forecast

NWS Forecast for: Charleston SC
Issued by: National Weather Service Charleston, SC
Last Update: 8:32 am EDT Aug 25, 2026		Print

This
Afternoon

This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 91. Heat index values as high as 102. Southeast wind 3 to 7 mph.

High: 91 °F

Chance
T-storms


Tonight

Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.

Low: 75 °F

Chance
T-storms


Wednesday

Wednesday: Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

High: 87 °F

Showers
Likely


Wednesday
Night

Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Low: 75 °F

Chance
T-storms then
Showers
Likely

Thursday

Thursday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

High: 89 °F

Showers
Likely then
Chance
T-storms

Thursday
Night

Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 76. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Low: 76 °F

Showers
Likely


Friday

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.

High: 89 °F

Chance
T-storms then
Showers
Likely

Friday
Night

Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.

Low: 75 °F

Showers
Likely


Saturday

Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

High: 88 °F

Showers
Likely



This Afternoon: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 91. Heat index values as high as 102. Southeast wind 3 to 7 mph.

Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.

Wednesday: Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming south 5 to 8 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 76. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 70%.

Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.

Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.

Sunday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

Sunday Night: A chance of thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.

Monday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.


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

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