Scott Air Force Base/Midamerica Airport Weather Forecast

    • 38
    • 59

    Becoming Sunny

    • 40
    • 68

    Mostly Sunny

    • 49
    • 67

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

    • 62
    • 83

    Rain Showers Likely

    • 51
    • 77

    Rain Showers Likely

Today 18 Apr St. Clair

Sunny and much cooler. Near steady temperature in the mid 50s. Northwest Winds 15 to 20 Mph.

Tonight 18 Apr St. Clair

Clear. Lows in the upper 30s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming west around 5 Mph after midnight.

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Scott Air Force Base/Midamerica Airport Temperature Statistics

April Temperature

Belleville, Scott AFB/MidAmerica Airport (0.6 miles)

  • Lowest 6 April, 2026

    38.8 °F

  • Average April

    63.2 °F

  • Highest 13 April, 2026

    82.6 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (0.6 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    68 °F
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