Blenheim, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blenheim, a town in Marlboro County, South Carolina.
This Afternoon
81°F
Sunny
Sunny, with a high near 81. East wind around 7 mph.
7-day forecast for Blenheim
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 7 mph E | 0% |
| Tonight | 54°F | Mostly Clear then Patchy Fog | 5 mph E | 1% |
| Wednesday | 83°F | Patchy Fog then Partly Sunny | 3 to 9 mph SE | 1% |
| Wednesday Night | 61°F | Mostly Cloudy | 1 to 7 mph SE | 5% |
| Thursday | 84°F | Slight Chance Rain Showers | 1 to 6 mph S | 18% |
| Thursday Night | 64°F | Chance Rain Showers | 3 mph S | 28% |
| Friday | 80°F | Showers And Thunderstorms Likely | 2 to 7 mph SW | 72% |
| Friday Night | 54°F | Chance Showers And Thunderstorms | 0 to 3 mph NW | 50% |
| Saturday | 75°F | Mostly Sunny | 6 mph N | 9% |
| Saturday Night | 45°F | Partly Cloudy | 5 mph N | 7% |
| Sunday | 69°F | Mostly Sunny | 5 mph N | 5% |
| Sunday Night | 42°F | Partly Cloudy | 3 mph W | 14% |
| Monday | 68°F | Sunny | 3 to 9 mph NW | 14% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 4% |
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 Nov 3, 2026.