Polson Bay Weather Forecast

    • 50
    • 82

    Mostly Cloudy

    • 45
    • 79

    Mostly Sunny

    • 51
    • 84

    Partly Sunny

    • 51
    • 83

    Chance Rain Showers

    • 47
    • 75

    Chance Rain Showers

    • 44
    • 71

    Slight Chance Rain

Today 10 May Flathead/Mission Valleys

Mostly cloudy. Highs in the mid 70s to lower 80s.

Tonight 10 May Flathead/Mission Valleys

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Polson Bay Temperature Statistics

May Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 6 May, 2026

    29.6 °F

  • Average May

    52.8 °F

  • Highest 3 May, 2026

    73.7 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.2 °F
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