Big Arm State Park Weather Forecast

    • 36
    • 41

    Mostly Cloudy

    • 39
    • 47

    Mostly Cloudy

    • 34
    • 49

    Mostly Cloudy

    • 31
    • 45

    Partly Sunny

    • 26
    • 42

    Partly Sunny

    • 25
    • 37

    Partly Sunny

Today 11 Jan Flathead/Mission Valleys

Mostly cloudy. Highs in the mid 30s to lower 40s. Southwest Winds 15 to 20 Mph.

Tonight 11 Jan Flathead/Mission Valleys

Mostly cloudy. Lows in the upper 20s to mid 30s.

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Big Arm State Park Temperature Statistics

January Temperature

Kalispell, Glacier Park International Airport (33.6 miles)

  • Lowest 1 January, 2026

    19.9 °F

  • Average January

    30.4 °F

  • Highest 4 January, 2026

    43 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (33.6 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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