Williston Weather Forecast

    • 68
    • 92

    Mostly Sunny

    • 73
    • 94

    Mostly Sunny

    • 72
    • 93

    Rain Showers Likely

    • 72
    • 90

    Rain Showers

    • 72
    • 89

    Rain Showers

    • 72
    • 90

    Chance Thunderstorms

Today 30 Jul Barnwell

Sunny. Highs in the lower 90s. North Winds around 5 Mph.

Tonight 30 Jul Barnwell

Mostly clear. Lows in the upper 60s. North Winds around 5 Mph in the Evening, becoming light and variable.

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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 °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

    65.1 °F

  • Average High 2021–2026

    76.8 °F
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