Isle Royale Weather Forecast

    • 36
    • 43

    Increasing Clouds

    • 43
    • 50

    Rain Showers

    • 43
    • 54

    Rain Showers

    • 39
    • 51

    Partly Sunny

    • 39
    • 47

    Partly Sunny

    • 42
    • 48

    Chance Rain Showers

    • 42
    • 52

    Chance Rain Showers

Today 26 Oct Keweenaw

A chance of rain Showers in the afternoon. Mostly cloudy. Highs 49 to 54. Chance of rain 40 percent.

Tonight 26 Oct Keweenaw

Cloudy. Near steady temperature in the upper 30s. Light northeast Winds, becoming east 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Royale Temperature Statistics

October Temperature

Copper Harbor (58.4 miles)

  • Lowest 20 October, 2026

    35.1 °F

  • Average October

    52.8 °F

  • Highest 11 October, 2026

    77 °F

Climate (2021–2026)

Copper Harbor (58.4 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    44.3 °F

  • Average High 2021–2026

    50.5 °F
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