Copper Harbor Weather Forecast

    • 63
    • 76

    Mostly Cloudy

    • 61
    • 75

    Mostly Cloudy

    • 58
    • 73

    Partly Sunny

    • 57
    • 70

    Partly Sunny

    • 59
    • 70

    Partly Sunny

    • 60
    • 71

    Mostly Cloudy

Today 10 Aug Keweenaw

Patchy dense fog this morning. Mostly sunny. Highs in the upper 70s. West Winds 5 to 10 Mph.

Tonight 10 Aug Keweenaw

Partly cloudy in the Evening, then becoming mostly cloudy. Lows 58 to 63. West Winds 5 to 10 Mph.

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Copper Harbor Temperature Statistics

August Temperature

Copper Harbor (0.6 miles)

  • Lowest 1 August, 2026

    53.1 °F

  • Average August

    64.6 °F

  • Highest 6 August, 2026

    81 °F

Climate (2021–2026)

Copper Harbor (0.6 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    50.6 °F
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