Big Arm State Park Weather Forecast

    • 26
    • 37

    Patchy Freezing Fog

    • 26
    • 36

    Partly Sunny

    • 25
    • 37

    Partly Sunny

    • 26
    • 35

    Mostly Cloudy

    • 23
    • 36

    Chance Snow

    • 12
    • 29

    Snow Likely

Today 18 Jan Flathead/Mission Valleys

Mostly sunny. Patchy freezing fog in the morning. Highs in the 30s.

Tonight 18 Jan Flathead/Mission Valleys

Mostly clear. Lows 15 to 22.

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Big Arm State Park Temperature Statistics

January Temperature

Kalispell, Glacier Park International Airport (33.6 miles)

  • Lowest 16 January, 2026

    16 °F

  • Average January

    30 °F

  • Highest 12 January, 2026

    45 °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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