Isle Royale Weather Forecast

    • 31
    • 43

    Rain Showers Likely

    • 29
    • 38

    Partly Sunny

    • 35
    • 41

    Mostly Cloudy

    • 33
    • 43

    Mostly Cloudy

    • 32
    • 41

    Mostly Cloudy

    • 28
    • 42

    Chance Rain Showers

Today 20 Nov Keweenaw

Patchy fog in the morning. Rain Showers likely in the Morning, then a chance of rain Showers in the afternoon. Cloudy. Highs around 43. Southwest Winds 10 to 15 Mph, becoming west in the afternoon. Chance of rain 70 percent.

Tonight 20 Nov Keweenaw

Rain Showers likely. Near steady temperature in the upper 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Royale Temperature Statistics

November Temperature

Copper Harbor (58.4 miles)

  • Lowest 17 November, 2025

    27 °F

  • Average November

    39.7 °F

  • Highest 4 November, 2025

    52 °F

Climate (2020–Present)

Copper Harbor (58.4 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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