Carterville Weather Forecast

    • 58
    • 79

    Thunderstorms

    • 40
    • 72

    Rain Showers Likely

    • 36
    • 53

    Mostly Sunny

    • 51
    • 67

    Mostly Sunny

    • 54
    • 72

    Mostly Cloudy

    • 36
    • 68

    Chance Rain Showers

Today 14 Mar Williamson

Mostly sunny and breezy. Highs in the upper 70s. South Winds 10 to 15 Mph with Gusts up to 30 Mph, increasing to 15 to 25 Mph with Gusts up to 40 Mph in the afternoon.

Tonight 14 Mar Williamson

Showers and Thunderstorms. Breezy with Lows in the upper 50s. South Winds 15 to 25 Mph with Gusts up to 45 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Carterville Temperature Statistics

March Temperature

Marion - Williamson County Regional Airport (3.1 miles)

  • Lowest 2 March, 2025

    19.4 °F

  • Average March

    43.3 °F

  • Highest 11 March, 2025

    77 °F

Climate (2020–Present)

Marion - Williamson County Regional Airport (3.1 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    67.2 °F
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