Big Arm Weather Forecast

    • 35
    • 53

    Mostly Sunny

    • 39
    • 57

    Partly Sunny

    • 42
    • 60

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

    • 44
    • 66

    Partly Sunny

    • 44
    • 62

    Partly Sunny

Today 13 Oct Flathead/Mission Valleys

Mostly sunny. Patchy fog in the morning. Highs in the 50s.

Tonight 13 Oct Flathead/Mission Valleys

Mostly clear. Patchy fog. Lows in the 20s to lower 30s.

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  • Temperature Real-Time

Big Arm Temperature Statistics

October Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 6 October, 2026

    32.6 °F

  • Average October

    50.1 °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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