Cornwall Lake Weather Forecast

    • 52
    • 80

    Mostly Sunny

    • 52
    • 83

    Partly Sunny

    • 54
    • 83

    Mostly Sunny

    • 50
    • 76

    Partly Sunny

    • 44
    • 67

    Partly Sunny

    • 48
    • 71

    Partly Sunny

Today 15 Sep Cheboygan

Mostly sunny. Highs in the upper 70s. East Winds up to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 15 Sep Cheboygan

Mostly clear. Patchy fog after midnight. Lows in the lower 50s. Light Winds.

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Cornwall Lake Temperature Statistics

September Temperature

Gaylord Regional Airport (19.9 miles)

  • Lowest 8 September, 2025

    39 °F

  • Average September

    57.1 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Gaylord Regional Airport (19.9 miles)

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  • Average Low 2020–2025

    38.1 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    55.7 °F
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