Williston Weather Forecast

    • 74
    • 95

    Chance Thunderstorms

    • 75
    • 94

    Slight Chance Thunderstorms

    • 75
    • 95

    Mostly Sunny

    • 76
    • 96

    Mostly Sunny

    • 77
    • 96

    Mostly Sunny

    • 75
    • 96

    Chance Thunderstorms

Today 6 Jul Barnwell

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 6 Jul Barnwell

Mostly clear. Near steady temperature in the upper 70s. Southwest Winds around 5 Mph.

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Williston Temperature Statistics

July Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 2 July, 2026

    69.8 °F

  • Average July

    83.9 °F

  • Highest 2 July, 2026

    96.8 °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

    76.7 °F
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