Polson Bay Weather Forecast

    • 54
    • 95

    Slight Chance Thunderstorms

    • 50
    • 91

    Patchy Smoke

    • 50
    • 85

    Partly Sunny

    • 42
    • 77

    Chance Rain

    • 40
    • 72

    Chance Rain

    • 45
    • 81

    Mostly Sunny

    • 45
    • 82

    Partly Sunny

Today 26 Aug Flathead/Mission Valleys

Mostly sunny. Areas of smoke early in the Morning, then patchy smoke in the late morning and afternoon. Slight chance of rain early in the afternoon. Slight chance of Showers and Thunderstorms late in the afternoon. Chance of precipitation 20 percent. Highs in the upper 80s to mid 90s.

Tonight 26 Aug Flathead/Mission Valleys

Mostly cloudy with a slight chance of Showers and Thunderstorms early in the Evening, then mostly cloudy with a slight chance of rain late in the evening. Partly cloudy after midnight. Patchy smoke late in the night. Chance of precipitation 20 percent. Some Thunderstorms may produce gusty Winds. Lows in the 50s.

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Polson Bay Temperature Statistics

August Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 5 August, 2026

    38.6 °F

  • Average August

    64.7 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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