Williston Weather Forecast

    • 68
    • 91

    Rain Showers Likely

    • 67
    • 85

    Rain Showers

    • 68
    • 87

    Rain Showers

    • 68
    • 87

    Rain Showers

    • 67
    • 87

    Rain Showers

    • 66
    • 87

    Rain Showers Likely

Today 22 May Barnwell

Mostly cloudy this Morning, then partly sunny with Showers likely with a chance of Thunderstorms this afternoon. Highs in the lower 90s. South Winds around 5 Mph. Chance of rain 60 percent.

Tonight 22 May Barnwell

Mostly cloudy with a chance of Showers and Thunderstorms. Patchy fog after midnight. Lows in the upper 60s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williston Temperature Statistics

May Temperature

Barnwell Regional Airport (9.9 miles)

  • Lowest 4 May, 2026

    46.4 °F

  • Average May

    69.1 °F

  • Highest 17 May, 2026

    91.4 °F

Climate (2021–Present)

Barnwell Regional Airport (9.9 miles)

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  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    76.7 °F
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