Agate Harbor Weather Forecast

    • 31
    • 37

    Mostly Cloudy

    • 30
    • 35

    Chance Rain/Snow

    • 22
    • 32

    Breezy

    • 24
    • 28

    Mostly Cloudy

    • 30
    • 34

    Mostly Cloudy

    • 33
    • 37

    Mostly Cloudy

Today 29 Mar Keweenaw

Mostly cloudy. Highs 33 to 38. East Winds 5 to 10 Mph.

Tonight 29 Mar Keweenaw

Mostly clear. Near steady temperature in the mid 20s. Northeast Winds 5 to 10 Mph.

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Agate Harbor Temperature Statistics

March Temperature

Copper Harbor (8.7 miles)

  • Lowest 1 March, 2026

    1 °F

  • Average March

    28.4 °F

  • Highest 9 March, 2026

    51.1 °F

Climate (2021–Present)

Copper Harbor (8.7 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    44.7 °F

  • Average High 2021–2026

    50.9 °F
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