Polson Bay Weather Forecast

    • 58
    • 94

    Increasing Clouds

    • 56
    • 94

    Chance Rain Showers

    • 48
    • 85

    Mostly Sunny

    • 50
    • 85

    Mostly Sunny

    • 53
    • 91

    Mostly Sunny

    • 50
    • 89

    Partly Sunny

    • 47
    • 84

    Mostly Sunny

Today 21 Aug Flathead/Mission Valleys

Partly cloudy. Highs in the upper 80s to mid 90s.

Tonight 21 Aug Flathead/Mission Valleys

Partly cloudy early in the evening then becoming mostly cloudy. Lows in the mid 50s to lower 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Polson Bay Temperature Statistics

August Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 5 August, 2026

    38.6 °F

  • Average August

    64.1 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    57 °F
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