Williston Weather Forecast

    • 72
    • 88

    Slight Chance Thunderstorms

    • 73
    • 93

    Mostly Sunny

    • 73
    • 94

    Mostly Sunny

    • 73
    • 92

    Chance Thunderstorms

    • 74
    • 92

    Slight Chance Thunderstorms

    • 75
    • 93

    Mostly Sunny

Today 15 Jul Barnwell

Partly sunny. Patchy fog this morning. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Light and variable Winds. Chance of rain 20 percent.

Tonight 15 Jul Barnwell

Partly cloudy in the Evening, then clearing. Humid with Lows in the lower 70s. Light and variable Winds.

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  • Temperature Real-Time

Williston Temperature Statistics

July Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 2 July, 2026

    69.8 °F

  • Average July

    84.8 °F

  • Highest 4 July, 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 °F

  • Average High 2021–2026

    76.8 °F
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