Belleville Weather Forecast

    • 44
    • 63

    Sunny

    • 52
    • 71

    Sunny

    • 44
    • 67

    Sunny

    • 41
    • 65

    Sunny

    • 45
    • 67

    Partly Sunny

    • 47
    • 58

    Chance Rain Showers

Today 19 Oct St. Clair

Sunny, cooler with Highs in the lower 60s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 19 Oct St. Clair

Clear. Lows in the lower 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight.

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Belleville Temperature Statistics

October Temperature

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

  • Lowest 10 October, 2025

    43 °F

  • Average October

    68.1 °F

  • Highest 3 October, 2025

    90 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    67.6 °F
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