Big Arm Weather Forecast

    • 64
    • 87

    Mostly Cloudy

    • 62
    • 81

    Chance Rain

    • 62
    • 83

    Chance Thunderstorms

    • 63
    • 88

    Chance Rain Showers

    • 64
    • 88

    Chance Rain

    • 64
    • 88

    Partly Sunny

    • 64
    • 89

    Partly Sunny

Today 13 Jul Flathead/Mission Valleys

Mostly cloudy. Highs in the mid 80s to lower 90s.

Tonight 13 Jul Flathead/Mission Valleys

Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 50s to mid 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm Temperature Statistics

July Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 5 July, 2026

    40.6 °F

  • Average July

    65.8 °F

  • Highest 11 July, 2026

    88 °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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