Flathead Lake Weather Forecast

    • 41
    • 45

    Rain Likely

    • 37
    • 49

    Mostly Cloudy

    • 40
    • 48

    Mostly Cloudy

    • 37
    • 46

    Slight Chance Rain

    • 35
    • 45

    Mostly Cloudy

    • 35
    • 46

    Mostly Cloudy

Today 30 Jan Flathead/Mission Valleys

Cloudy. A chance of rain and a slight chance of light freezing rain in the Morning, then slight chance of rain in the afternoon. Chance of precipitation 40 percent. Highs in the upper 30s to mid 40s.

Tonight 30 Jan Flathead/Mission Valleys

Cloudy with a slight chance of light freezing rain. A chance of rain. Chance of precipitation 30 percent. Lows in the 30s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flathead Lake Temperature Statistics

January Temperature

Kalispell, Glacier Park International Airport (30.4 miles)

  • Lowest 24 January, 2026

    3.7 °F

  • Average January

    26.5 °F

  • Highest 12 January, 2026

    46.7 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (30.4 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    57 °F
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