Isle Royale Weather Forecast

    • 47
    • 67

    Rain Showers Likely

    • 45
    • 59

    Increasing Clouds

    • 47
    • 59

    Chance Rain Showers

    • 52
    • 64

    Partly Sunny

    • 52
    • 71

    Partly Sunny

    • 51
    • 71

    Partly Sunny

    • 50
    • 70

    Partly Sunny

Today 15 Jun Keweenaw

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 15 Jun Keweenaw

Mostly cloudy. A slight chance of rain Showers and Thunderstorms in the evening. Lows in the upper 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming light north after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Royale Temperature Statistics

June Temperature

Copper Harbor (58.4 miles)

  • Lowest 6 June, 2026

    44.1 °F

  • Average June

    58.9 °F

  • Highest 2 June, 2026

    75.9 °F

Climate (2021–Present)

Copper Harbor (58.4 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    50.7 °F
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