Agate Harbor Weather Forecast

    • 61
    • 70

    Partly Sunny

    • 59
    • 70

    Mostly Cloudy

    • 57
    • 67

    Partly Sunny

    • 60
    • 67

    Mostly Cloudy

    • 61
    • 71

    Chance Rain Showers

    • 61
    • 70

    Mostly Cloudy

Today 11 Aug Keweenaw

Partly cloudy. Highs in the lower 70s. Northwest Winds 5 to 10 Mph, becoming north this afternoon.

Tonight 11 Aug Keweenaw

Partly cloudy. Lows around 58. Light southwest Winds, becoming west after midnight.

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Agate Harbor Temperature Statistics

August Temperature

Copper Harbor (8.7 miles)

  • Lowest 1 August, 2026

    53.1 °F

  • Average August

    64.5 °F

  • Highest 6 August, 2026

    81 °F

Climate (2021–2026)

Copper Harbor (8.7 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    50.6 °F
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