Big Arm Weather Forecast

    • 46
    • 64

    Rain

    • 37
    • 54

    Rain

    • 36
    • 53

    Partly Sunny

    • 33
    • 51

    Mostly Cloudy

    • 34
    • 51

    Slight Chance Rain/Snow

    • 34
    • 51

    Chance Rain

Today 22 Oct Flathead/Mission Valleys

Partly cloudy. Highs in the 60s to lower 70s.

Tonight 22 Oct Flathead/Mission Valleys

Partly cloudy in the Evening, then mostly cloudy with a 50 percent chance of rain after midnight. Patchy fog after midnight. Lows in the mid 30s to lower 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm Temperature Statistics

October Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 13 October, 2026

    21.7 °F

  • Average October

    46.6 °F

  • Highest 5 October, 2026

    74.6 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (34.8 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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