Polson Bay Weather Forecast

    • 42
    • 72

    Increasing Clouds

    • 47
    • 77

    Partly Sunny

    • 49
    • 82

    Partly Sunny

    • 48
    • 85

    Chance Rain

    • 43
    • 66

    Rain Likely

    • 46
    • 69

    Slight Chance Rain

    • 48
    • 76

    Partly Sunny

Today 22 May Flathead/Mission Valleys

Partly cloudy. Highs in the mid 60s to lower 70s.

Tonight 22 May Flathead/Mission Valleys

Mostly cloudy with a 20 percent chance of rain early in the Evening, then partly cloudy in the late evening and overnight. Lows in the upper 30s to mid 40s.

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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

    51.4 °F

  • Highest 12 May, 2026

    76.6 °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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