Polson Bay Weather Forecast

    • 30
    • 55

    Decreasing Clouds

    • 35
    • 62

    Mostly Sunny

    • 39
    • 65

    Chance Rain

    • 40
    • 66

    Chance Rain

    • 44
    • 71

    Chance Rain

    • 44
    • 71

    Chance Rain Showers

Today 17 May Flathead/Mission Valleys

Rain and snow likely early in the morning. Areas of snow and a slight chance of rain late in the Morning, then slight chance of Showers and Thunderstorms early in the afternoon. Patchy fog early in the morning. Chance of precipitation 70 percent. Little or no new snow accumulation. Highs in the 50s.

Tonight 17 May Flathead/Mission Valleys

Mostly clear. Widespread frost after midnight. Lows in the upper 20s to mid 30s.

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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

    53.8 °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

    33.5 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.2 °F
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