Williston Weather Forecast

    • 64
    • 76

    Slight Chance Rain Showers

    • 56
    • 75

    Slight Chance Rain Showers

    • 52
    • 75

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 54
    • 80

    Partly Sunny

    • 58
    • 83

    Partly Sunny

Today 23 Sep Barnwell

Mostly cloudy this Morning, then becoming partly sunny. Patchy fog this morning. Highs in the upper 70s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 23 Sep Barnwell

Mostly cloudy. Lows in the mid 60s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Williston Temperature Statistics

September Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 17 September, 2026

    62.6 °F

  • Average September

    79.9 °F

  • Highest 4 September, 2026

    96.8 °F

Climate (2021–2026)

Barnwell Regional Airport (9.9 miles)

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  • Average Low 2021–2026

    54.6 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    76.9 °F
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