Scott Air Force Base/Midamerica Airport Weather Forecast

    • 64
    • 84

    Thunderstorms Likely

    • 68
    • 89

    Mostly Sunny

    • 69
    • 90

    Chance Thunderstorms

    • 60
    • 82

    Rain Showers Likely

    • 54
    • 72

    Chance Thunderstorms

    • 55
    • 74

    Slight Chance Thunderstorms

Today 16 May St. Clair

Mostly cloudy with a chance of Thunderstorms. Showers, mainly in the morning. Highs in the mid 80s. South Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 16 May St. Clair

Partly cloudy. Lows in the mid 60s. Southeast Winds 5 to 10 Mph.

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Scott Air Force Base/Midamerica Airport Temperature Statistics

May Temperature

Belleville, Scott AFB/MidAmerica Airport (0.6 miles)

  • Lowest 7 May, 2026

    40.1 °F

  • Average May

    61.5 °F

  • Highest 12 May, 2026

    81.3 °F

Climate (2021–Present)

Belleville, Scott AFB/MidAmerica Airport (0.6 miles)

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  • Average Low 2021–2026

    47.8 °F

  • Average 2021–2026

    57.8 °F

  • Average High 2021–2026

    68.1 °F
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