Charleston, SC Weather & Growing Conditions
Today
89°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 89. Heat index values as high as 103. Southeast wind 2 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 | 2 to 12 mph SE | 27% |
| Tonight | 77°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 12 mph S | 51% |
| Wednesday | 89°F | Showers And Thunderstorms Likely then Partly Sunny | 3 to 12 mph S | 69% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 5 to 12 mph S | 49% |
| Thursday | 89°F | Chance Showers And Thunderstorms | 3 to 10 mph S | 49% |
| Thursday Night | 79°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SE | 22% |
| Friday | 90°F | Chance Showers And Thunderstorms | 3 to 12 mph SE | 45% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 3 to 10 mph SE | 32% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 10 mph SE | 62% |
| Saturday Night | 78°F | Chance Showers And Thunderstorms | 2 to 9 mph S | 32% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 48% |
| Sunday Night | 78°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 34% |
| Monday | 91°F | Chance Showers And Thunderstorms | 2 to 10 mph SW | 34% |
| Monday Night | 79°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 34% |
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 (11.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.