Mascoutah Weather Forecast

    • 44
    • 77

    Sunny

    • 41
    • 73

    Sunny

    • 55
    • 75

    Partly Sunny

    • 53
    • 79

    Partly Sunny

    • 59
    • 81

    Partly Sunny

    • 60
    • 80

    Partly Sunny

    • 57
    • 81

    Mostly Sunny

Today 8 Oct St. Clair

Sunny. Highs in the mid 70s. Northeast Winds 5 to 10 Mph.

Tonight 8 Oct St. Clair

Clear. Lows in the mid 40s. Northeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mascoutah Temperature Statistics

October Temperature

Belleville, Scott AFB/MidAmerica Airport (5 miles)

  • Lowest 5 October, 2025

    54.3 °F

  • Average October

    72.2 °F

  • Highest 3 October, 2025

    90 °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

    47.5 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    67.5 °F
Get WillyWeather+ to remove ads