Betsy Bay Weather Forecast

    • 47
    • 63

    Decreasing Clouds

    • 55
    • 67

    Rain Showers

    • 49
    • 65

    Breezy

    • 53
    • 65

    Chance Rain Showers

    • 54
    • 66

    Partly Sunny

    • 54
    • 67

    Partly Sunny

Today 13 Sep Keweenaw

Mostly cloudy with a slight chance of Showers in the Morning, then mostly sunny in the afternoon. Highs in the lower 60s. Northwest Winds 10 to 20 Mph with Gusts up to 35 Mph. Chance of rain 20 percent.

Tonight 13 Sep Keweenaw

Clear. Lows 44 to 49. Northwest Winds 5 to 15 Mph with Gusts up to 25 Mph, Diminishing to light after midnight.

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Betsy Bay Temperature Statistics

September Temperature

Copper Harbor (14.3 miles)

  • Lowest 5 September, 2026

    54 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    80.1 °F

Climate (2021–2026)

Copper Harbor (14.3 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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