St. Clair County International Airport Weather Forecast

    • 33
    • 42

    Increasing Clouds

    • 40
    • 54

    Mostly Cloudy

    • 52
    • 61

    Mostly Cloudy

    • 37
    • 70

    Rain

    • 30
    • 43

    Chance Rain/Snow

    • 36
    • 43

    Chance Rain/Snow

Today 28 Mar St. Clair

Mostly sunny in the Morning, then becoming partly cloudy. Highs in the lower 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 28 Mar St. Clair

Mostly cloudy. Lows in the lower 30s. Southwest Winds 5 to 15 Mph.

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St. Clair County International Airport Temperature Statistics

March Temperature

St Clair County International Airport (0 miles)

  • Lowest 2 March, 2026

    10.4 °F

  • Average March

    37.8 °F

  • Highest 9 March, 2026

    68 °F

Climate (2021–Present)

St Clair County International Airport (0 miles)

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  • Average Low 2021–2026

    39.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    58.7 °F
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