Arrowhead Lake Weather Forecast

    • 62
    • 80

    Chance Thunderstorms

    • 57
    • 82

    Slight Chance Thunderstorms

    • 54
    • 77

    Chance Rain Showers

    • 52
    • 70

    Slight Chance Rain Showers

    • 50
    • 67

    Chance Rain Showers

    • 53
    • 69

    Chance Rain Showers

Today 15 Sep North Itasca

Mostly cloudy late this Morning, then becoming mostly sunny. A chance of Showers with a slight chance of Thunderstorms this afternoon. Hot with Highs around 80. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.

Tonight 15 Sep North Itasca

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the lower 60s. South Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Arrowhead Lake Temperature Statistics

September Temperature

Bigfork Municipal Airport (9.3 miles)

  • Lowest 7 September, 2025

    32 °F

  • Average September

    57.2 °F

  • Highest 1 September, 2025

    80.6 °F

Climate (2020–Present)

Bigfork Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    30.9 °F

  • Average 2020–2025

    42.2 °F

  • Average High 2020–2025

    52.4 °F
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