Swansea, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Swansea, a town in Lexington County, South Carolina.
Tonight
71°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. West wind around 2 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Swansea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Slight Chance Showers And Thunderstorms | 2 mph W | 21% |
| Saturday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph NE | 36% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 1 to 5 mph E | 31% |
| Sunday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph NE | 30% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 3 mph SE | 30% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph N | 44% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 50% |
| Tuesday | 88°F | Showers And Thunderstorms Likely | 1 to 7 mph NE | 60% |
| Tuesday Night | 69°F | Showers And Thunderstorms Likely | 3 to 8 mph NE | 60% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 8 to 13 mph NE | 33% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 7 to 13 mph NE | 33% |
| Thursday | 82°F | Mostly Sunny | 12 mph NE | 9% |
| Thursday Night | 64°F | Partly Cloudy | 5 to 10 mph NE | 9% |
| Friday | 82°F | Mostly Sunny | 7 to 10 mph N | 9% |
Forecast source: National Weather Service (api.weather.gov) for Swansea (33.740, -81.105). Updated through the day.
Growing snapshot for Swansea
Last spring frost
Mar 26
First fall frost
Nov 6
Growing season
227 days
Hardiness zone
8b
More local growing data for Swansea: nearby ZIP 29160 weather · frost dates · planting calendar · South Carolina frost dates
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All South Carolina locations ›
Climate data from the nearest NOAA station, N 5Ne, Sc (5.8 mi from Swansea). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.