Lake Whittlesey Weather Forecast

    • 59
    • 72

    Rain Showers

    • 58
    • 69

    Chance Rain Showers

    • 54
    • 64

    Partly Sunny

    • 59
    • 66

    Partly Sunny

    • 60
    • 71

    Mostly Cloudy

    • 60
    • 72

    Chance Rain Showers

Today 25 Aug Keweenaw

Mostly cloudy. Showers likely with a chance of Thunderstorms in the afternoon. Warmer with Highs in the upper 70s. South Winds 5 to 10 Mph, becoming southeast in the afternoon. Chance of rain 70 percent.

Tonight 25 Aug Keweenaw

Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Cloudy. Lows around 60. South Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight. Chance of rain 70 percent.

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Lake Whittlesey Temperature Statistics

August Temperature

Copper Harbor (53.4 miles)

  • Lowest 1 August, 2026

    53.1 °F

  • Average August

    63.8 °F

  • Highest 6 August, 2026

    81 °F

Climate (2021–2026)

Copper Harbor (53.4 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    50.5 °F
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