Big Arm Weather Forecast

    • 55
    • 79

    Rain Showers Likely

    • 50
    • 67

    Rain

    • 47
    • 56

    Rain

    • 46
    • 59

    Rain Likely

    • 47
    • 66

    Slight Chance Rain

    • 50
    • 71

    Chance Rain Showers

Today 29 May Flathead/Mission Valleys

Partly cloudy. A 50 percent chance of Showers and Thunderstorms in the afternoon. Highs in the upper 70s to mid 80s.

Tonight 29 May Flathead/Mission Valleys

Mostly cloudy. Chance of rain Showers and a slight chance of Thunderstorms in the Evening, then a chance of rain after midnight. Chance of precipitation 50 percent. Lows in the upper 40s to mid 50s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm Temperature Statistics

May Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 6 May, 2026

    29.6 °F

  • Average May

    53.3 °F

  • Highest 25 May, 2026

    83.6 °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

    45.6 °F

  • Average High 2021–2026

    57.2 °F
Get WillyWeather+ to remove ads