Casco Weather Forecast

    • 38
    • 54

    Sunny

    • 40
    • 60

    Sunny

    • 39
    • 64

    Mostly Sunny

    • 42
    • 67

    Mostly Sunny

    • 42
    • 67

    Mostly Sunny

    • 45
    • 68

    Partly Sunny

Today 17 Oct St. Clair

Sunny. Highs in the mid 50s. Northwest Winds up to 15 Mph.

Tonight 17 Oct St. Clair

Clear. Lows in the mid 30s. Southwest Winds up to 10 Mph.

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Casco Temperature Statistics

October Temperature

St Clair County International Airport (12.4 miles)

  • Lowest 6 October, 2026

    33.8 °F

  • Average October

    58.6 °F

  • Highest 13 October, 2026

    86 °F

Climate (2021–2026)

St Clair County International Airport (12.4 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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