St. Clair County International Airport Weather Forecast

    • 51
    • 68

    Increasing Clouds

    • 62
    • 79

    Chance Rain Showers

    • 58
    • 72

    Chance Rain Showers

    • 58
    • 77

    Chance Rain Showers

    • 58
    • 73

    Chance Rain Showers

    • 59
    • 77

    Rain Showers Likely

    • 55
    • 73

    Chance Rain Showers

Today 14 Sep St. Clair

Mostly sunny. Highs in the upper 60s. North Winds up to 10 Mph, becoming northeast in the late afternoon.

Tonight 14 Sep St. Clair

Mostly cloudy. Lows in the lower 50s. Southeast Winds up to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Real-Time

St. Clair County International Airport Temperature Statistics

September Temperature

St Clair County International Airport (0 miles)

  • Lowest 11 September, 2026

    50 °F

  • Average September

    70 °F

  • Highest 2 September, 2026

    95 °F

Climate (2021–2026)

St Clair County International Airport (0 miles)

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  • Average Low 2021–2026

    39.8 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    58.8 °F
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