Polson Bay Weather Forecast

    • 43
    • 62

    Slight Chance Thunderstorms

    • 43
    • 66

    Rain

    • 37
    • 59

    Rain

    • 40
    • 58

    Slight Chance Rain

    • 41
    • 61

    Partly Sunny

    • 42
    • 62

    Mostly Sunny

Today 11 Sep Flathead/Mission Valleys

Slight chance of Thunderstorms through the day. Rain Showers likely in the Morning, then chance of rain Showers in the afternoon. Chance of precipitation 70 percent. Cooler. Highs in the mid 50s to lower 60s.

Tonight 11 Sep Flathead/Mission Valleys

Mostly cloudy. Lows in the 40s.

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  • Temperature Real-Time

Polson Bay Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (41.6 miles)

  • Lowest 1 September, 2026

    41.6 °F

  • Average September

    57.9 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (41.6 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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