Agate Harbor Weather Forecast

    • 51
    • 58

    Increasing Clouds

    • 45
    • 56

    Partly Sunny

    • 47
    • 55

    Mostly Sunny

    • 53
    • 60

    Partly Sunny

    • 49
    • 62

    Chance Rain Showers

    • 42
    • 51

    Breezy

    • 39
    • 45

    Mostly Cloudy

Today 20 Oct Keweenaw

Partly cloudy. Highs around 44.

Tonight 20 Oct Keweenaw

Clear in the Evening, then becoming mostly cloudy. Near steady temperature in the upper 40s. South Winds 5 to 10 Mph, becoming southwest after midnight.

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Agate Harbor Temperature Statistics

October Temperature

Copper Harbor (8.7 miles)

  • Lowest 5 October, 2026

    37.9 °F

  • Average October

    52.9 °F

  • Highest 11 October, 2026

    77 °F

Climate (2021–2026)

Copper Harbor (8.7 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    44.3 °F

  • Average High 2021–2026

    50.5 °F
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