Columbia Falls Weather Forecast

    • 47
    • 71

    Decreasing Clouds

    • 50
    • 76

    Partly Sunny

    • 45
    • 72

    Rain Showers

    • 41
    • 55

    Slight Chance Rain

    • 43
    • 57

    Mostly Cloudy

    • 43
    • 58

    Partly Sunny

Today 23 Sep Flathead/Mission Valleys

Mostly sunny. Highs in the 70s.

Tonight 23 Sep Flathead/Mission Valleys

Partly cloudy. Lows in the 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Columbia Falls Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (5.6 miles)

  • Lowest 17 September, 2026

    38.6 °F

  • Average September

    56.9 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (5.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
Get WillyWeather+ to remove ads