Lake Gratiot Weather Forecast

    • 29
    • 42

    Increasing Clouds

    • 38
    • 45

    Chance Rain Showers

    • 22
    • 44

    Rain Showers Likely

    • 20
    • 31

    Mostly Cloudy

    • 26
    • 38

    Mostly Cloudy

    • 23
    • 37

    Chance Snow Showers

Today 13 Mar Keweenaw

Partly cloudy. Highs around 40. Northwest Winds 5 to 10 Mph, becoming east this afternoon.

Tonight 13 Mar Keweenaw

Cloudy. Lows around 30. East Winds 10 to 15 Mph, becoming southeast 5 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Gratiot Temperature Statistics

March Temperature

Copper Harbor (13.7 miles)

  • Lowest 8 March, 2025

    7 °F

  • Average March

    28.9 °F

  • Highest 9 March, 2025

    52 °F

Climate (2020–Present)

Copper Harbor (13.7 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    50.7 °F
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