Barnwell Weather Forecast
- 55
- 78
Mostly Sunny
- 58
- 82
Partly Sunny
- 58
- 85
Chance Rain Showers
- 60
- 84
Chance Rain
- 62
- 83
Chance Rain
- 61
- 85
Chance Rain
Today 30 Mar Barnwell
Mostly sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.
Tonight 30 Mar Barnwell
Mostly clear. Lows in the mid 50s. South Winds around 5 Mph.
Barnwell Temperature Statistics
March Temperature
Barnwell Regional Airport (1.9 miles)
Lowest 18 March, 2026
30.2 °FAverage March
63.3 °FHighest 11 March, 2026
89.6 °F
Climate (2021–Present)
Barnwell Regional Airport (1.9 miles)
Average Low 2021–2026
54.3 °FAverage 2021–2026
64.9 °FAverage High 2021–2026
76.7 °F