Blenheim, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blenheim, a town in Marlboro County, South Carolina.
Overnight
71°F
Patchy Fog
Patchy fog after 5am. Mostly cloudy, with a low around 71. Northwest wind around 1 mph.
7-day forecast for Blenheim
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Patchy Fog | 1 mph NW | 14% |
| Saturday | 89°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 1 to 8 mph NE | 18% |
| Saturday Night | 69°F | Partly Cloudy | 1 to 8 mph E | 10% |
| Sunday | 89°F | Mostly Sunny | 2 mph NE | 8% |
| Sunday Night | 69°F | Partly Cloudy | 2 mph SE | 8% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SE | 29% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph E | 57% |
| Tuesday | 86°F | Showers And Thunderstorms Likely | 3 to 8 mph NE | 58% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 6 to 12 mph NE | 58% |
| Wednesday | 77°F | Chance Showers And Thunderstorms | 14 mph NE | 39% |
| Wednesday Night | 63°F | Chance Showers And Thunderstorms | 8 to 14 mph NE | 39% |
| Thursday | 77°F | Slight Chance Rain Showers | 14 mph N | 15% |
| Thursday Night | 61°F | Partly Cloudy | 6 to 12 mph NE | 12% |
| Friday | 79°F | Mostly Sunny then Slight Chance Rain Showers | 9 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov) for Blenheim (34.510, -79.652). Updated through the day.
Growing snapshot for Blenheim
Last spring frost
Mar 22
First fall frost
Nov 10
Growing season
235 days
Hardiness zone
8b
More local growing data for Blenheim: nearby ZIP 29516 weather · frost dates · planting calendar · South Carolina frost dates
Nearby towns & communities
All South Carolina locations ›
Climate data from the nearest NOAA station, Florence 8 Ne, Sc (12.6 mi from Blenheim). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.