Barnwell, SC Weather & Growing Conditions
Tonight
61°F
Partly Cloudy
Partly cloudy, with a low around 61. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Partly Cloudy | 3 mph E | 2% |
| Wednesday | 83°F | Patchy Fog then Partly Sunny | 3 to 9 mph SE | 4% |
| Wednesday Night | 64°F | Mostly Cloudy then Chance Light Rain | 0 to 6 mph SE | 30% |
| Thursday | 82°F | Slight Chance Light Rain then Chance Showers And Thunderstorms | 0 to 3 mph S | 31% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 mph S | 46% |
| Friday | 80°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 54% |
| Friday Night | 53°F | Slight Chance Light Rain | 2 mph NW | 24% |
| Saturday | 77°F | Mostly Sunny | 2 mph N | 8% |
| Saturday Night | 47°F | Partly Cloudy | 1 mph N | 5% |
| Sunday | 73°F | Mostly Sunny | 2 mph N | 6% |
| Sunday Night | 44°F | Partly Cloudy | 1 mph NW | 11% |
| Monday | 71°F | Sunny then Slight Chance Light Rain | 5 mph NW | 15% |
| Monday Night | 40°F | Slight Chance Light Rain | 2 mph N | 15% |
| Tuesday | 72°F | Sunny | 1 to 5 mph NW | 4% |
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 Nov 4, 2026.