Scott Air Force Base/Midamerica Airport Weather Forecast

    • 39
    • 67

    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 19 Apr St. Clair

Sunny. Not as cool with Highs in the upper 60s. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 19 Apr St. Clair

Mostly clear. Lows around 40. North Winds 5 to 10 Mph.

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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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