St. Clair County International Airport Weather Forecast

    • 55
    • 81

    Areas Smoke

    • 59
    • 82

    Areas Smoke

    • 61
    • 83

    Partly Sunny

    • 60
    • 83

    Partly Sunny

    • 62
    • 82

    Mostly Sunny

    • 65
    • 85

    Slight Chance Thunderstorms

    • 65
    • 87

    Mostly Sunny

Today 3 Aug St. Clair

Mostly sunny. Near steady temperature in the upper 70s. Southeast Winds up to 5 Mph, becoming east in the late afternoon.

Tonight 3 Aug St. Clair

Clear. Areas of smoke. Lows in the upper 50s. Southeast Winds up to 5 Mph, becoming Southwest, Then, becoming north early in the morning.

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St. Clair County International Airport Temperature Statistics

August Temperature

St Clair County International Airport (0 miles)

  • Lowest 1 August, 2025

    51.8 °F

  • Average August

    64 °F

  • Highest 1 August, 2025

    75.2 °F

Climate (2020–Present)

St Clair County International Airport (0 miles)

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  • Average Low 2020–2025

    40 °F

  • Average 2020–2025

    49.6 °F

  • Average High 2020–2025

    58.6 °F
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