Big Arm Weather Forecast

    • 34
    • 52

    Mostly Cloudy

    • 37
    • 52

    Rain

    • 35
    • 46

    Rain

    • 33
    • 48

    Chance Rain/Snow

    • 31
    • 45

    Chance Rain/Snow

    • 29
    • 43

    Chance Rain/Snow

Today 25 Oct Flathead/Mission Valleys

Mostly cloudy. Highs in the mid 40s to lower 50s.

Tonight 25 Oct Flathead/Mission Valleys

Mostly cloudy. Lows in the 20s.

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  • 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

    46.2 °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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