Charleston, SC Weather & Growing Conditions
Today
89°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 103. South wind 2 to 9 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 | 2 to 9 mph S | 33% |
| Tonight | 76°F | Chance Showers And Thunderstorms | 2 to 9 mph S | 50% |
| Wednesday | 89°F | Showers And Thunderstorms Likely then Partly Sunny | 2 to 10 mph S | 66% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms | 2 to 9 mph S | 40% |
| Thursday | 90°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 8 mph S | 57% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms | 1 to 7 mph S | 21% |
| Friday | 91°F | Chance Showers And Thunderstorms | 1 to 9 mph SE | 47% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 1 to 8 mph SE | 26% |
| Saturday | 90°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 8 mph SE | 63% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 1 to 7 mph S | 36% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 7 mph SW | 47% |
| Sunday Night | 77°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 39% |
| Monday | 93°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 40% |
| Monday Night | 78°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 40% |
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 (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.