Polson Bay Weather Forecast

    • 40
    • 76

    Mostly Sunny

    • 43
    • 77

    Mostly Sunny

    • 44
    • 74

    Mostly Sunny

    • 44
    • 73

    Mostly Sunny

    • 45
    • 73

    Partly Sunny

    • 43
    • 75

    Chance Rain

    • 34
    • 58

    Chance Rain

Today 4 Oct Flathead/Mission Valleys

Mostly cloudy. A 30 percent chance of rain and snow in the morning. Highs in the upper 40s to mid 50s.

Tonight 4 Oct Flathead/Mission Valleys

Mostly clear. Lows in the mid 30s to lower 40s. Southwest Winds to 15 Mph.

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Polson Bay Temperature Statistics

October Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 1 October, 2026

    35.1 °F

  • Average October

    47 °F

  • Highest 2 October, 2026

    66 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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