Big Arm Weather Forecast

    • 65
    • 89

    Patchy Smoke

    • 66
    • 93

    Slight Chance Thunderstorms

    • 64
    • 92

    Patchy Smoke

    • 63
    • 93

    Sunny

    • 60
    • 86

    Mostly Sunny

    • 61
    • 86

    Mostly Sunny

    • 61
    • 87

    Mostly Sunny

Today 22 Jul Flathead/Mission Valleys

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

Tonight 22 Jul Flathead/Mission Valleys

Mostly clear. Patchy smoke. Lows in the upper 50s to mid 60s.

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  • 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

    67.7 °F

  • Highest 16 July, 2026

    92.6 °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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