Williston Weather Forecast

    • 71
    • 90

    Chance Thunderstorms

    • 71
    • 91

    Rain Showers Likely

    • 71
    • 92

    Chance Thunderstorms

    • 72
    • 92

    Chance Thunderstorms

    • 72
    • 93

    Chance Thunderstorms

    • 73
    • 93

    Chance Thunderstorms

Today 5 Aug Barnwell

Mostly sunny. A chance of Showers and Thunderstorms. Highs in the lower 90s. South Winds around 5 Mph. Chance of rain 40 percent.

Tonight 5 Aug Barnwell

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. South Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williston Temperature Statistics

August Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 1 August, 2026

    73.4 °F

  • Average August

    78.1 °F

  • Highest 1 August, 2026

    95 °F

Climate (2021–2026)

Barnwell Regional Airport (9.9 miles)

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  • Average Low 2021–2026

    54.5 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    76.8 °F
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