Rock Harbor Weather Forecast

    • 17
    • 26

    Mostly Cloudy

    • 25
    • 33

    Partly Sunny

    • 19
    • 31

    Mostly Cloudy

    • 22
    • 28

    Snow Showers Likely

    • 10
    • 29

    Mostly Cloudy

    • 16
    • 25

    Mostly Cloudy

    • 23
    • 31

    Partly Sunny

Today 22 Mar Keweenaw

Mostly cloudy. North Winds 5 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Mar Keweenaw

Partly cloudy in the Evening, then mostly cloudy with a slight chance of snow Showers after midnight. Near steady temperature around 20. Light north Winds, becoming northwest 5 to 10 Mph with Gusts up to 20 Mph after midnight. Chance of snow 20 percent.

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  • Temperature Forecast NOAA

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Rock Harbor Temperature Statistics

March Temperature

Copper Harbor (54.1 miles)

  • Lowest 1 March, 2026

    1 °F

  • Average March

    28 °F

  • Highest 9 March, 2026

    51.1 °F

Climate (2021–Present)

Copper Harbor (54.1 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    44.7 °F

  • Average High 2021–2026

    50.9 °F
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