Polson Bay Weather Forecast

    • 51
    • 87

    Chance Rain

    • 50
    • 77

    Rain Likely

    • 51
    • 81

    Chance Thunderstorms

    • 53
    • 86

    Chance Rain

    • 49
    • 81

    Rain Showers Likely

    • 44
    • 69

    Rain Showers Likely

    • 44
    • 73

    Slight Chance Rain

Today 25 May Flathead/Mission Valleys

Mostly sunny. Highs in the 80s. South Winds to 15 Mph.

Tonight 25 May Flathead/Mission Valleys

Mostly cloudy. Chance of rain Showers and a slight chance of Thunderstorms early in the Evening, then Areas of rain in the late evening and early morning. Chance of precipitation 40 percent. Some Thunderstorms may produce gusty Winds. Lows in the upper 40s to mid 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

    51.6 °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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