Williston Weather Forecast

    • 63
    • 93

    Increasing Clouds

    • 66
    • 93

    Mostly Sunny

    • 67
    • 93

    Slight Chance Rain Showers

    • 68
    • 90

    Chance Thunderstorms

    • 68
    • 90

    Chance Thunderstorms

    • 68
    • 90

    Chance Thunderstorms

Today 19 May Barnwell

Sunny. Highs in the lower 90s. Light and variable Winds, becoming southeast around 5 Mph this afternoon.

Tonight 19 May Barnwell

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 60s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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

    67.4 °F

  • Highest 6 May, 2026

    89.6 °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