Columbia Falls Weather Forecast

    • 46
    • 58

    Rain

    • 45
    • 59

    Rain Likely

    • 47
    • 71

    Partly Sunny

    • 45
    • 70

    Chance Rain Showers

    • 42
    • 60

    Chance Rain

    • 38
    • 57

    Chance Rain

    • 38
    • 58

    Chance Rain

Today 7 Sep Flathead/Mission Valleys

Slight chance of Thunderstorms. Rain Showers likely. Chance of precipitation near 100 percent. Cooler. Some Thunderstorms may produce heavy rainfall. Highs in the 50s.

Tonight 7 Sep Flathead/Mission Valleys

Rain likely. Chance of rain near 100 percent. Lows in the 40s.

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  • Temperature Real-Time

Columbia Falls Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (5.6 miles)

  • Lowest 1 September, 2026

    41.6 °F

  • Average September

    59.1 °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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