Big Arm Weather Forecast

    • 39
    • 48

    Rain Likely

    • 35
    • 50

    Mostly Cloudy

    • 35
    • 50

    Mostly Cloudy

    • 36
    • 51

    Chance Rain

    • 34
    • 50

    Chance Rain

    • 34
    • 49

    Partly Sunny

Today 28 Oct Flathead/Mission Valleys

Partly cloudy. Highs in the upper 40s to mid 50s.

Tonight 28 Oct Flathead/Mission Valleys

Rain likely early in the Evening, then Areas of rain in the late evening and overnight. Slight chance of snow after midnight. Patchy fog late in the night. Chance of precipitation 70 percent. No snow accumulation. Lows in the 30s.

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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

    45.9 °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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