Charleston, SC Weather & Growing Conditions
Today
89°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm. Mostly sunny, with a high near 89. Heat index values as high as 102. South wind 3 to 12 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Chance Showers And Thunderstorms | 3 to 12 mph S | 27% |
| Tonight | 76°F | Chance Showers And Thunderstorms | 3 to 12 mph S | 47% |
| Wednesday | 89°F | Showers And Thunderstorms Likely then Partly Sunny | 3 to 12 mph S | 69% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 3 to 12 mph S | 44% |
| Thursday | 89°F | Chance Showers And Thunderstorms | 2 to 10 mph S | 53% |
| Thursday Night | 78°F | Slight Chance Showers And Thunderstorms | 2 to 9 mph S | 20% |
| Friday | 90°F | Chance Showers And Thunderstorms | 2 to 12 mph SE | 46% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 2 to 10 mph SE | 29% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 10 mph SE | 63% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 2 to 9 mph S | 34% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 1 to 9 mph SW | 48% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 37% |
| Monday | 92°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 37% |
| Monday Night | 78°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 37% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charleston, SC
Last spring frost
Feb 4
First fall frost
Dec 30
Growing season
321 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 City, Sc (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.