| NWS Forecast for: Barnwell SC Issued by: National Weather Service Columbia, SC Last Update: 2:21 pm EDT Jul 19, 2026 | |
| Tonight: Partly cloudy, with a low around 75. Light south wind. Monday: Sunny, with a high near 95. Heat index values as high as 102. Calm wind becoming southwest around 5 mph in the afternoon. Monday Night: Mostly clear, with a low around 75. Light south wind. Tuesday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 95. Heat index values as high as 102. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%. Tuesday Night: Partly cloudy, with a low around 75. South wind 3 to 5 mph. Wednesday: Mostly sunny, with a high near 94. Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 40%. Thursday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 50%. Thursday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%. Friday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Chance of precipitation is 50%. Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%. Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%. Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%. Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 40%. | |
| Barnwell SC 33.23°N 81.36°W (Elev. 207 ft) | |
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