Big Arm Weather Forecast

    • 48
    • 67

    Rain

    • 36
    • 56

    Rain

    • 34
    • 53

    Partly Sunny

    • 40
    • 56

    Mostly Cloudy

    • 44
    • 56

    Chance Rain

    • 35
    • 55

    Chance Rain

    • 32
    • 48

    Mostly Sunny

Today 20 Mar Flathead/Mission Valleys

Mostly cloudy with a 50 percent chance of Areas of rain. Highs in the 60s. Windy with southwest Winds 20 to 30 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 20 Mar Flathead/Mission Valleys

Rain likely. Chance of rain 70 percent. Lows in the 40s. South Winds to 15 Mph with Gusts to around 35 Mph in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm Temperature Statistics

March Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 15 March, 2026

    5.6 °F

  • Average March

    35.5 °F

  • Highest 3 March, 2026

    56.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (34.8 miles)

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

  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.1 °F
Get WillyWeather+ to remove ads