Big Arm Weather Forecast

    • 60
    • 85

    Areas Smoke

    • 60
    • 87

    Slight Chance Rain

    • 57
    • 85

    Partly Sunny

    • 55
    • 79

    Mostly Sunny

    • 50
    • 74

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

Today 25 Aug Flathead/Mission Valleys

Partly cloudy early in the morning then becoming mostly sunny. Areas of smoke early in the Morning, then patchy smoke in the late morning and afternoon. Highs in the 80s to lower 90s.

Tonight 25 Aug Flathead/Mission Valleys

Mostly clear. Patchy smoke. Lows in the upper 40s to mid 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Arm Temperature Statistics

August Temperature

Kalispell, Glacier Park International Airport (34.8 miles)

  • Lowest 5 August, 2026

    38.6 °F

  • Average August

    64.8 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (34.8 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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