Charleston, SC Weather & Growing Conditions
Today
89°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Heat index values as high as 102. South wind 2 to 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph S | 36% |
| Tonight | 75°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph S | 45% |
| Wednesday | 89°F | Showers And Thunderstorms Likely then Partly Sunny | 2 to 10 mph S | 63% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms | 2 to 10 mph S | 32% |
| Thursday | 90°F | Showers And Thunderstorms Likely | 1 to 8 mph S | 57% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 1 to 7 mph SE | 26% |
| Friday | 90°F | Chance Showers And Thunderstorms | 1 to 9 mph SE | 51% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 2 to 8 mph SE | 27% |
| Saturday | 89°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 8 mph SE | 65% |
| Saturday Night | 76°F | Chance Showers And Thunderstorms | 1 to 7 mph S | 41% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 7 mph SW | 48% |
| Sunday Night | 76°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 44% |
| Monday | 92°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 41% |
| Monday Night | 77°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 7 mph SW | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charleston, SC
Last spring frost
Mar 7
First fall frost
Nov 27
Growing season
266 days
Hardiness zone
9a
Explore more for Charleston, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Charleston Intl Ap, Sc (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.