Charleston, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleston, a city in Charleston County, South Carolina.
Today
91°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Heat index values as high as 102. North wind 1 to 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Charleston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph N | 47% |
| Tonight | 73°F | Chance Showers And Thunderstorms | 1 to 5 mph E | 36% |
| Sunday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph NE | 42% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph E | 20% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 6 mph NE | 23% |
| Monday Night | 74°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph E | 37% |
| Tuesday | 86°F | Showers And Thunderstorms Likely | 2 to 8 mph NE | 68% |
| Tuesday Night | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph NE | 68% |
| Wednesday | 84°F | Chance Rain Showers then Chance Showers And Thunderstorms | 8 to 12 mph NE | 49% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 12 mph N | 49% |
| Thursday | 83°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 13 mph N | 22% |
| Thursday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 to 12 mph NE | 22% |
| Friday | 82°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 mph NE | 24% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph NE | 24% |
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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All South Carolina locations ›
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 Sep 19, 2026.