Big Arm State Park Weather Forecast

    • 46
    • 63

    Increasing Clouds

    • 45
    • 63

    Rain Showers Likely

    • 44
    • 62

    Chance Rain

    • 41
    • 54

    Rain Likely

    • 40
    • 51

    Rain Likely

    • 34
    • 49

    Rain/Snow

Today 10 Apr Flathead/Mission Valleys

Partly cloudy. Highs in the 60s.

Tonight 10 Apr Flathead/Mission Valleys

Mostly cloudy. Lows in the upper 30s to mid 40s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm State Park Temperature Statistics

April Temperature

Kalispell, Glacier Park International Airport (33.6 miles)

  • Lowest 4 April, 2026

    22.6 °F

  • Average April

    44.7 °F

  • Highest 6 April, 2026

    67.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (33.6 miles)

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

  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.1 °F
Get WillyWeather+ to remove ads