Siskiwit Lake Weather Forecast

    • 57
    • 67

    Mostly Cloudy

    • 56
    • 66

    Mostly Cloudy

    • 56
    • 65

    Partly Sunny

    • 56
    • 63

    Partly Sunny

    • 57
    • 66

    Partly Sunny

    • 57
    • 66

    Mostly Cloudy

Today 10 Aug Keweenaw

Patchy dense fog in the 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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Siskiwit Lake Temperature Statistics

August Temperature

Copper Harbor (56.5 miles)

  • Lowest 1 August, 2026

    53.1 °F

  • Average August

    64.4 °F

  • Highest 6 August, 2026

    81 °F

Climate (2021–2026)

Copper Harbor (56.5 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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