Columbia Falls Weather Forecast

    • 46
    • 61

    Chance Rain Showers

    • 39
    • 62

    Chance Rain Showers

    • 42
    • 62

    Mostly Cloudy

    • 41
    • 65

    Slight Chance Rain Showers

    • 41
    • 67

    Mostly Sunny

    • 43
    • 69

    Partly Sunny

Today 29 Sep Flathead/Mission Valleys

Partly cloudy. Highs in the mid 60s to lower 70s.

Tonight 29 Sep Flathead/Mission Valleys

Mostly cloudy with a 50 percent chance of Areas of rain. Lows in the 40s to lower 50s. Windy with southwest Winds 20 to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia Falls Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (5.6 miles)

  • Lowest 27 September, 2026

    27 °F

  • Average September

    55.9 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (5.6 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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