Williston Weather Forecast

    • 70
    • 94

    Rain Showers Likely

    • 69
    • 89

    Thunderstorms

    • 71
    • 88

    Thunderstorms Likely

    • 72
    • 91

    Slight Chance Thunderstorms

    • 74
    • 93

    Slight Chance Thunderstorms

    • 74
    • 94

    Chance Thunderstorms

Today 12 Jul Barnwell

Mostly sunny. A chance of Showers and Thunderstorms in the afternoon. Highs in the mid 90s. West Winds around 5 Mph. Chance of rain 50 percent.

Tonight 12 Jul Barnwell

Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the mid 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williston Temperature Statistics

July Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 2 July, 2026

    69.8 °F

  • Average July

    85.7 °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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