Cornwall Lake Weather Forecast

    • 57
    • 81

    Increasing Clouds

    • 53
    • 78

    Partly Sunny

    • 50
    • 78

    Mostly Sunny

    • 55
    • 79

    Partly Sunny

    • 57
    • 79

    Chance Rain Showers

    • 61
    • 74

    Chance Rain Showers

Today 3 Sep Cheboygan

Partly sunny. Highs in the upper 70s. Light Winds.

Tonight 3 Sep Cheboygan

Partly cloudy. Patchy fog through the night. Lows in the upper 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornwall Lake Temperature Statistics

September Temperature

Gaylord Regional Airport (19.9 miles)

  • Lowest 1 September, 2026

    63 °F

  • Average September

    74.8 °F

  • Highest 1 September, 2026

    86 °F

Climate (2021–2026)

Gaylord Regional Airport (19.9 miles)

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  • Average Low 2021–2026

    37.5 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    55.4 °F
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