Cornwall Lake Weather Forecast

    • 44
    • 72

    Slight Chance Thunderstorms

    • 48
    • 72

    Partly Sunny

    • 61
    • 79

    Chance Rain Showers

    • 62
    • 78

    Rain Showers Likely

    • 62
    • 80

    Chance Rain Showers

    • 60
    • 80

    Chance Rain Showers

Today 27 Aug Cheboygan

Partly sunny. Highs in the lower 70s. Northwest Winds 5 to 15 Mph.

Tonight 27 Aug Cheboygan

Mostly clear. Patchy fog after midnight. Lows in the mid 40s. Northwest Winds up to 10 Mph. Gusts up to 20 Mph early.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cornwall Lake Temperature Statistics

August Temperature

Gaylord Regional Airport (19.9 miles)

  • Lowest 20 August, 2026

    47.6 °F

  • Average August

    67.3 °F

  • Highest 4 August, 2026

    84.7 °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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