Barnwell, SC Weather & Growing Conditions
Overnight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Partly Cloudy | 0 mph | 7% |
| Saturday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 mph N | 34% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms then Patchy Fog | 2 mph NE | 33% |
| Sunday | 90°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 1 mph NE | 20% |
| Sunday Night | 71°F | Partly Cloudy | 1 mph NE | 7% |
| Monday | 91°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph E | 22% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph SE | 46% |
| Tuesday | 88°F | Showers And Thunderstorms Likely | 0 to 3 mph NE | 56% |
| Tuesday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 mph NE | 56% |
| Wednesday | 83°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 9 mph NE | 22% |
| Wednesday Night | 66°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 9 mph NE | 22% |
| Thursday | 81°F | Mostly Sunny | 5 to 8 mph NE | 13% |
| Thursday Night | 64°F | Partly Cloudy | 2 to 7 mph NE | 13% |
| Friday | 81°F | Slight Chance Rain Showers | 5 mph NE | 15% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Barnwell, SC
Last spring frost
Mar 22
First fall frost
Nov 9
Growing season
233 days
Hardiness zone
8b
Explore more for Barnwell, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Barnwell 5 Ene, Sc (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.