Williston Weather Forecast

    • 74
    • 97

    Hot

    • 71
    • 96

    Thunderstorms Likely

    • 71
    • 91

    Chance Thunderstorms

    • 70
    • 93

    Mostly Sunny

    • 70
    • 92

    Mostly Sunny

    • 70
    • 92

    Chance Thunderstorms

Today 20 Aug Barnwell

Sunny. Near steady temperature in the upper 90s. Light and variable Winds.

Tonight 20 Aug Barnwell

Mostly clear. Lows in the mid 70s. South Winds around 5 Mph.

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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

    80.9 °F

  • Highest 13 August, 2026

    98.6 °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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