Lake John Weather Forecast

    • 54
    • 70

    Chance Rain Showers

    • 51
    • 70

    Mostly Sunny

    • 51
    • 63

    Partly Sunny

    • 54
    • 66

    Rain Showers Likely

    • 54
    • 68

    Chance Rain Showers

    • 51
    • 65

    Partly Sunny

Today 1 Jul Keweenaw

Mostly sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the upper 70s. West Winds 5 to 15 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 1 Jul Keweenaw

Mostly clear. Lows around 57. West Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Lake John Temperature Statistics

July Temperature

Copper Harbor (52.2 miles)

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  • Average July

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Climate (2020–Present)

Copper Harbor (52.2 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    50.8 °F
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