Big Arm Weather Forecast

    • 56
    • 87

    Slight Chance Thunderstorms

    • 57
    • 87

    Increasing Clouds

    • 61
    • 87

    Mostly Cloudy

    • 66
    • 88

    Mostly Cloudy

    • 64
    • 84

    Chance Rain

    • 64
    • 86

    Mostly Sunny

    • 63
    • 87

    Mostly Sunny

Today 10 Jul Flathead/Mission Valleys

Mostly sunny. Highs in the upper 80s to mid 90s.

Tonight 10 Jul Flathead/Mission Valleys

Mostly clear. A 20 percent chance of Showers and Thunderstorms after midnight. Lows in the upper 40s to mid 50s.

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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 °F

  • Highest 8 July, 2026

    84.9 °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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