Marine City Airport Weather Forecast

    • 59
    • 77

    Decreasing Clouds

    • 57
    • 78

    Mostly Sunny

    • 62
    • 81

    Mostly Sunny

    • 58
    • 82

    Slight Chance Thunderstorms

    • 54
    • 77

    Mostly Sunny

    • 51
    • 72

    Slight Chance Thunderstorms

Today 20 Aug St. Clair

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the mid 70s. North Winds 5 to 15 Mph with Gusts up to 30 Mph.

Tonight 20 Aug St. Clair

Partly cloudy. Lows in the upper 50s. Northeast Winds up to 10 Mph. Gusts up to 30 Mph in the evening.

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Marine City Airport Temperature Statistics

August Temperature

St Clair County International Airport (13 miles)

  • Lowest 2 August, 2025

    46.4 °F

  • Average August

    71.5 °F

  • Highest 10 August, 2025

    89.6 °F

Climate (2020–Present)

St Clair County International Airport (13 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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