Rock Harbor Weather Forecast

    • 27
    • 31

    Rain/Snow

    • 5
    • 34

    Snow Showers

    • 12
    • 20

    Snow Showers Likely

    • 6
    • 28

    Slight Chance Snow Showers

    • 8
    • 16

    Mostly Cloudy

    • 19
    • 26

    Chance Snow Showers

Today 17 Dec Keweenaw

Cloudy. A slight chance of snow Showers in the afternoon. Highs in the lower 30s. Northwest Winds 10 to 20 Mph, becoming southwest 5 to 15 Mph in the afternoon. Chance of snow 20 percent.

Tonight 17 Dec Keweenaw

Cloudy with a chance of snow Showers. A chance of freezing drizzle with a slight chance of drizzle in the Evening, then a chance of rain Showers and freezing rain after midnight. Lows around 27. South Winds 5 to 15 Mph with Gusts up to 35 Mph. Chance of precipitation 50 percent.

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Rock Harbor Temperature Statistics

December Temperature

Copper Harbor (54.1 miles)

  • Lowest 13 December, 2025

    6.1 °F

  • Average December

    19.5 °F

  • Highest 11 December, 2025

    30 °F

Climate (2020–Present)

Copper Harbor (54.1 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    51.1 °F
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