Williston Weather Forecast

    • 75
    • 97

    Isolated Thunderstorms

    • 75
    • 96

    Chance Thunderstorms

    • 77
    • 95

    Chance Thunderstorms

    • 78
    • 99

    Slight Chance Thunderstorms

    • 75
    • 98

    Chance Thunderstorms

    • 74
    • 96

    Chance Thunderstorms

Today 14 Aug Barnwell

Mostly sunny with isolated Showers and Thunderstorms. Near steady temperature in the mid 90s. West Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 109.

Tonight 14 Aug Barnwell

Mostly cloudy with isolated Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williston Temperature Statistics

August Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 7 August, 2026

    71.6 °F

  • Average August

    78.6 °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 °F

  • Average High 2021–2026

    76.8 °F
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