Williston Weather Forecast

    • 68
    • 87

    Chance Thunderstorms

    • 66
    • 88

    Rain Showers Likely

    • 65
    • 83

    Rain Showers Likely

    • 63
    • 82

    Rain Showers

    • 60
    • 79

    Chance Rain Showers

    • 59
    • 79

    Chance Thunderstorms

Today 27 May Barnwell

Mostly cloudy. A chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

Tonight 27 May Barnwell

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the upper 60s. Southwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent.

Graph Plots Open in Graphs

  • 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

    70.9 °F

  • Highest 21 May, 2026

    93.2 °F

Climate (2021–Present)

Barnwell Regional Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    76.7 °F
Get WillyWeather+ to remove ads