Isle Royale Weather Forecast

    • 65
    • 74

    Rain Showers Likely

    • 64
    • 74

    Mostly Cloudy

    • 63
    • 80

    Partly Sunny

    • 63
    • 79

    Mostly Sunny

    • 63
    • 80

    Mostly Sunny

    • 64
    • 79

    Partly Sunny

Today 8 Aug Keweenaw

Showers likely and a chance of Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Mostly cloudy. Highs 77 to 82. Southwest Winds 10 to 15 Mph becoming west 5 to 15 Mph in the afternoon. Chance of rain 70 percent.

Tonight 8 Aug Keweenaw

Partly cloudy. Lows 62 to 67. Southwest Winds 5 to 10 Mph becoming west overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Isle Royale Temperature Statistics

August Temperature

Copper Harbor (58.4 miles)

  • Lowest 5 August, 2020

    51.1 °F

  • Average August

    61.2 °F

  • Highest 1 August, 2020

    75.9 °F

Climate (2010–Present)

Copper Harbor (58.4 miles)

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  • Average Low 2010–Present

    36.4 °F

  • Average 2010–Present

    42.1 °F

  • Average High 2010–Present

    47.9 °F
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