Summerville, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summerville, a town in Dorchester County, South Carolina.
Today
90°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 102. Southeast wind 0 to 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Summerville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Chance Showers And Thunderstorms | 0 to 7 mph SE | 50% |
| Tonight | 73°F | Chance Showers And Thunderstorms | 1 to 7 mph S | 43% |
| Wednesday | 90°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 9 mph S | 52% |
| Wednesday Night | 74°F | Slight Chance Showers And Thunderstorms | 1 to 9 mph S | 20% |
| Thursday | 90°F | Showers And Thunderstorms Likely | 0 to 8 mph S | 63% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms | 0 to 7 mph SE | 47% |
| Friday | 91°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 9 mph SE | 56% |
| Friday Night | 74°F | Chance Showers And Thunderstorms | 1 to 8 mph SE | 35% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 7 mph SE | 64% |
| Saturday Night | 74°F | Chance Showers And Thunderstorms | 0 to 6 mph S | 50% |
| Sunday | 92°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 6 mph SW | 54% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph SW | 54% |
| Monday | 93°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 46% |
| Monday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 6 mph SW | 46% |
Forecast source: National Weather Service (api.weather.gov) for Summerville (33.006, -80.179). Updated through the day.
Growing snapshot for Summerville
Last spring frost
Mar 22
First fall frost
Nov 12
Growing season
238 days
Hardiness zone
8b
More local growing data for Summerville: nearby ZIP 29483 weather · frost dates · planting calendar · South Carolina frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Summerville 4W, Sc (0.5 mi from Summerville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.