Flathead Lake Weather Forecast

    • 39
    • 49

    Slight Chance Rain

    • 38
    • 51

    Chance Rain/Snow

    • 39
    • 50

    Rain

    • 38
    • 47

    Chance Rain

    • 36
    • 48

    Chance Rain

    • 34
    • 48

    Chance Snow

Today 29 Mar Flathead/Mission Valleys

Mostly cloudy. A 20 percent chance of rain in the afternoon. Highs in the upper 40s to mid 50s.

Tonight 29 Mar Flathead/Mission Valleys

Mostly cloudy. A 20 percent chance of rain and snow after midnight. Lows in the 30s.

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  • Temperature Real-Time

Flathead Lake Temperature Statistics

March Temperature

Kalispell, Glacier Park International Airport (30.4 miles)

  • Lowest 7 March, 2025

    17.9 °F

  • Average March

    38.7 °F

  • Highest 26 March, 2025

    70 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (30.4 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    44.9 °F

  • Average High 2020–2025

    56.4 °F
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