Mascoutah Weather Forecast

    • 35
    • 59

    Decreasing Clouds

    • 27
    • 45

    Increasing Clouds

    • 22
    • 42

    Mostly Sunny

    • 29
    • 39

    Rain/Snow Likely

    • 29
    • 40

    Rain/Snow

    • 20
    • 35

    Slight Chance Rain/Snow

    • 20
    • 32

    Slight Chance Rain/Snow

Today 25 Nov St. Clair

Cloudy. Near steady temperature in the upper 50s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 25 Nov St. Clair

Mostly cloudy with a slight chance of rain this Evening, then partly cloudy after midnight. Much cooler with Lows in the mid 30s. West Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mascoutah Temperature Statistics

November Temperature

Belleville, Scott AFB/MidAmerica Airport (5 miles)

  • Lowest 11 November, 2025

    24.6 °F

  • Average November

    51.9 °F

  • Highest 15 November, 2025

    81.1 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (5 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    67.6 °F
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