Lake Manganese Weather Forecast

    • 57
    • 76

    Chance Rain Showers

    • 57
    • 70

    Chance Rain Showers

    • 59
    • 73

    Partly Sunny

    • 62
    • 73

    Partly Sunny

    • 63
    • 78

    Chance Rain Showers

    • 61
    • 77

    Mostly Cloudy

Today 26 Jul Keweenaw

Partly cloudy. A chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may be severe. Highs around 80. South Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 26 Jul Keweenaw

A slight chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Patchy fog after midnight. Mostly cloudy. Some Thunderstorms may be severe. Lows 57 to 62. Light south Winds, becoming northeast after midnight. Chance of rain 20 percent.

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Lake Manganese Temperature Statistics

July Temperature

Copper Harbor (0.6 miles)

  • Lowest 9 July, 2026

    48.9 °F

  • Average July

    63.9 °F

  • Highest 13 July, 2026

    84 °F

Climate (2021–2026)

Copper Harbor (0.6 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    44.5 °F

  • Average High 2021–2026

    50.6 °F
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