Charleston, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleston, a city in Charleston County, South Carolina.
Today
89°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 102. East wind 1 to 12 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Charleston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 12 mph E | 62% |
| Tonight | 76°F | Chance Showers And Thunderstorms | 3 to 10 mph S | 48% |
| Wednesday | 89°F | Showers And Thunderstorms Likely then Partly Sunny | 2 to 12 mph S | 68% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms | 3 to 12 mph S | 42% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 2 to 9 mph S | 54% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms | 2 to 8 mph SE | 20% |
| Friday | 90°F | Chance Showers And Thunderstorms | 2 to 12 mph SE | 47% |
| Friday Night | 77°F | Chance Showers And Thunderstorms | 2 to 9 mph SE | 27% |
| Saturday | 89°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 9 mph SE | 63% |
| Saturday Night | 77°F | Chance Showers And Thunderstorms | 1 to 8 mph S | 35% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 1 to 8 mph SW | 48% |
| Sunday Night | 77°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 38% |
| Monday | 92°F | Chance Showers And Thunderstorms | 2 to 9 mph SW | 38% |
| Monday Night | 78°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 38% |
Forecast source: National Weather Service (api.weather.gov) for Charleston (32.828, -79.973). Updated through the day.
Growing snapshot for Charleston
Last spring frost
Mar 7
First fall frost
Nov 27
Growing season
266 days
Hardiness zone
9a
More local growing data for Charleston: nearby ZIP 29405 weather · frost dates · planting calendar · South Carolina frost dates
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Climate data from the nearest NOAA station, Charleston Intl Ap, Sc (4.7 mi from Charleston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.