Polson Bay Weather Forecast

    • 43
    • 56

    Rain

    • 41
    • 59

    Rain

    • 43
    • 65

    Chance Rain

    • 46
    • 74

    Chance Rain

    • 47
    • 74

    Chance Rain

    • 47
    • 77

    Partly Sunny

Today 31 May Flathead/Mission Valleys

Rain likely. Chance of rain near 100 percent. Highs in the 50s.

Tonight 31 May Flathead/Mission Valleys

Rain likely. Patchy fog. Chance of rain near 100 percent. 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

    54.4 °F

  • Highest 28 May, 2026

    89.7 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    57.2 °F
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