Polson Bay Weather Forecast

    • 49
    • 82

    Mostly Sunny

    • 49
    • 83

    Mostly Sunny

    • 53
    • 89

    Partly Sunny

    • 53
    • 88

    Slight Chance Thunderstorms

    • 51
    • 82

    Chance Rain

    • 49
    • 75

    Chance Rain

Today 4 Sep Flathead/Mission Valleys

Mostly sunny. Areas of smoke in the morning. Haze in the late morning and afternoon. Not as warm. Highs in the mid 70s to lower 80s. Northeast Winds 15 to 20 Mph.

Tonight 4 Sep Flathead/Mission Valleys

Partly cloudy. Haze in the evening. Lows in the 40s to lower 50s. Northeast Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Polson Bay Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 1 September, 2025

    62.6 °F

  • Average September

    76.3 °F

  • Highest 1 September, 2025

    91.4 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    45.1 °F

  • Average High 2020–2025

    56.8 °F
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