Barnwell County weather, town by town
7 places in Barnwell County, South Carolina, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 2002 to 2025. Station extremes, not official state records.
Barnwell County Weather Facts
Barnwell County has 7 places on myweatherrock (6 towns, 1 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 104°F at Blackville 3 W on June 30, 2012. The coldest night is 11°F at Blackville 3 W on January 7, 2014. The wettest day brought 7.87 inches of rain at Blackville 3 W on September 2, 2016. The biggest single-day snow measured 19.02 inches at Bamberg on February 10, 1973. Those are station measurements from NOAA's daily records, 2002 to 2025, not official state records. By area the largest place is Williston, about 9 square miles.
About Barnwell County weather
The map on the Now tab shows every Barnwell County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 7 Barnwell County towns with station normals, the warmest month is July, when the day usually reaches 91°F, and the coldest is January, when the night usually falls to 35°F. June is the wettest, with rain on about 12 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Barnwell County weather records
Measured at the NOAA stations serving these towns, daily records 2002 to 2025. Station extremes, not official state records.
Common questions about Barnwell County weather
- What is the hottest temperature recorded at a Barnwell County station?
- 104°F at Blackville 3 W on June 30, 2012, in the NOAA daily station records myweatherrock holds (2002 to 2025).
- What is the coldest temperature recorded at a Barnwell County station?
- 11°F at Blackville 3 W on January 7, 2014.
- What is the most rain a Barnwell County station has measured in one day?
- 7.87 inches at Blackville 3 W on September 2, 2016.
- What is the biggest one-day snowfall at a Barnwell County station?
- 19.02 inches at Bamberg on February 10, 1973.
- How many Barnwell County towns have a weather page here?
- 7: 6 towns, 1 cities. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Barnwell County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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