Big Arm State Park Weather Forecast

    • 60
    • 85

    Areas Smoke

    • 65
    • 83

    Areas Smoke

    • 65
    • 86

    Partly Sunny

    • 67
    • 88

    Slight Chance Rain

    • 66
    • 90

    Chance Rain

    • 65
    • 90

    Mostly Sunny

Today 19 Jul Flathead/Mission Valleys

Sunny. Patchy smoke early in the morning. Highs in the mid 80s to lower 90s. Southwest Winds to 15 Mph.

Tonight 19 Jul Flathead/Mission Valleys

Partly cloudy in the evening then becoming mostly cloudy. Areas of smoke after midnight. Lows in the 50s.

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Big Arm State Park Temperature Statistics

July Temperature

Kalispell, Glacier Park International Airport (33.6 miles)

  • Lowest 5 July, 2026

    40.6 °F

  • Average July

    67.2 °F

  • Highest 16 July, 2026

    92.6 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (33.6 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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