Napoleon Lake Weather Forecast

    • 43
    • 73

    Mostly Sunny

    • 35
    • 65

    Mostly Sunny

    • 45
    • 67

    Sunny

    • 46
    • 78

    Partly Sunny

    • 46
    • 69

    Partly Sunny

    • 55
    • 74

    Mostly Cloudy

Today 6 May North Itasca

Sunny. Highs in the lower 70s. West Winds 5 to 10 Mph, becoming north 10 to 15 Mph in the afternoon.

Tonight 6 May North Itasca

Clear. Lows in the upper 40s. South Winds around 5 Mph.

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  • Temperature Real-Time

Napoleon Lake Temperature Statistics

May Temperature

Bigfork Municipal Airport (14.3 miles)

  • Lowest 2 May, 2025

    35.6 °F

  • Average May

    48.1 °F

  • Highest 3 May, 2025

    73.4 °F

Climate (2020–Present)

Bigfork Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    30.6 °F

  • Average 2020–2025

    42 °F

  • Average High 2020–2025

    52.3 °F
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