Mascoutah Weather Forecast

    • 57
    • 79

    Thunderstorms

    • 38
    • 69

    Chance Rain Showers

    • 36
    • 52

    Partly Sunny

    • 52
    • 69

    Mostly Sunny

    • 55
    • 73

    Mostly Cloudy

    • 36
    • 68

    Chance Rain Showers

Today 14 Mar St. Clair

Mostly sunny and windy. Highs around 80. South Winds 15 to 20 Mph with Gusts up to 35 Mph, increasing to 20 to 30 Mph with Gusts up to 50 Mph in the afternoon.

Tonight 14 Mar St. Clair

Mostly cloudy with Showers and Thunderstorms in the Evening, then mostly clear after midnight. Windy with Lows in the mid 50s. South Winds 20 to 30 Mph. Gusts up to 50 Mph, decreasing to 40 Mph after midnight. Chance of rain 90 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mascoutah Temperature Statistics

March Temperature

Belleville, Scott AFB/MidAmerica Airport (5 miles)

  • Lowest 2 March, 2025

    22.5 °F

  • Average March

    46.1 °F

  • Highest 11 March, 2025

    79.2 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (5 miles)

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

  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    67.1 °F
Get WillyWeather+ to remove ads