Lost Lake Weather Forecast

    • 56
    • 77

    Chance Rain Showers

    • 57
    • 71

    Rain Showers

    • 58
    • 78

    Chance Thunderstorms

    • 47
    • 68

    Partly Sunny

    • 48
    • 70

    Mostly Cloudy

Today 6 Sep Northern Cook/Northern Lake

Mostly sunny. Highs in the upper 70s. Southeast Winds around 5 Mph.

Tonight 6 Sep Northern Cook/Northern Lake

Mostly cloudy. A chance of Showers after midnight. Humid with Lows in the upper 50s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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Lost Lake Temperature Statistics

September Temperature

Grand Marais/Cook County Airport (30.4 miles)

  • Lowest 3 September, 2026

    50 °F

  • Average September

    66.1 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Grand Marais/Cook County Airport (30.4 miles)

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  • Average Low 2021–2026

    28.7 °F

  • Average 2021–2026

    38 °F

  • Average High 2021–2026

    46.5 °F
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