Cornwall Lake Weather Forecast

    • 44
    • 72

    Decreasing Clouds

    • 43
    • 65

    Mostly Cloudy

    • 45
    • 62

    Rain Showers Likely

    • 42
    • 64

    Mostly Cloudy

    • 40
    • 60

    Mostly Cloudy

    • 44
    • 64

    Slight Chance Rain Showers

Today 17 Sep Cheboygan

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

Tonight 17 Sep Cheboygan

Partly cloudy. Lows in the mid 40s. 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 14 September, 2026

    46 °F

  • Average September

    65 °F

  • Highest 1 September, 2026

    86.6 °F

Climate (2021–2026)

Gaylord Regional Airport (19.9 miles)

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  • Average Low 2021–2026

    37.6 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    55.4 °F
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