Sucker Bay Weather Forecast

    • 52
    • 54

    Mostly Cloudy

    • 54
    • 58

    Mostly Cloudy

    • 50
    • 55

    Partly Sunny

    • 51
    • 53

    Mostly Sunny

    • 53
    • 55

    Mostly Sunny

    • 54
    • 56

    Mostly Cloudy

Today 18 Sep Keweenaw

Mostly cloudy. Highs 55 to 60 inland to around 61 at the shore. East Winds 5 to 15 Mph.

Tonight 18 Sep Keweenaw

Partly cloudy. Lows around 51. Southeast Winds 5 to 10 Mph.

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Sucker Bay Temperature Statistics

September Temperature

Copper Harbor (55.3 miles)

  • Lowest 14 September, 2026

    46 °F

  • Average September

    64.2 °F

  • Highest 1 September, 2026

    80.1 °F

Climate (2021–2026)

Copper Harbor (55.3 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    50.6 °F
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