Mascoutah Weather Forecast

    • 29
    • 46

    Sunny

    • 34
    • 51

    Sunny

    • 30
    • 50

    Mostly Sunny

    • 42
    • 48

    Rain Likely

    • 33
    • 54

    Rain Likely

    • 36
    • 47

    Chance Rain

    • 34
    • 57

    Partly Sunny

Today 27 Jan St. Clair

Sunny. Near steady temperature in the mid 40s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 27 Jan St. Clair

Mostly clear. Not as cool with Lows around 30. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Mascoutah Temperature Statistics

January Temperature

Belleville, Scott AFB/MidAmerica Airport (5 miles)

  • Lowest 15 January, 2025

    2.7 °F

  • Average January

    25.2 °F

  • Highest 25 January, 2025

    50.4 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (5 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    67 °F
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