Keystone Bay Weather Forecast

    • 45
    • 60

    Mostly Cloudy

    • 47
    • 61

    Partly Sunny

    • 47
    • 60

    Partly Sunny

    • 52
    • 61

    Partly Sunny

    • 57
    • 68

    Rain Showers Likely

    • 57
    • 72

    Rain Showers Likely

    • 56
    • 72

    Chance Rain Showers

Today 24 Jun Keweenaw

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 24 Jun Keweenaw

Mostly cloudy with a slight chance of rain Showers in the Evening, then partly cloudy after midnight. Patchy fog after midnight. Lows in the upper 40s. East Winds 5 to 10 Mph, becoming light northeast after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Keystone Bay Temperature Statistics

June Temperature

Copper Harbor (6.8 miles)

  • Lowest 18 June, 2026

    43 °F

  • Average June

    56.7 °F

  • Highest 2 June, 2026

    75.9 °F

Climate (2021–2026)

Copper Harbor (6.8 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    50.7 °F
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