Flathead Lake Weather Forecast

    • 44
    • 58

    Chance Rain

    • 46
    • 57

    Partly Sunny

    • 43
    • 60

    Rain Likely

    • 41
    • 51

    Chance Rain

    • 41
    • 49

    Chance Rain

    • 39
    • 49

    Chance Rain

Today 20 Oct Flathead/Mission Valleys

Mostly cloudy. A 30 percent chance of Areas of rain in the afternoon. Highs in the upper 50s to mid 60s.

Tonight 20 Oct Flathead/Mission Valleys

Mostly cloudy with a 30 percent chance of rain in the Evening, then partly cloudy after midnight. Lows in the 30s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flathead Lake Temperature Statistics

October Temperature

Kalispell, Glacier Park International Airport (30.4 miles)

  • Lowest 13 October, 2021

    14 °F
  • Average October

    45.6 °F
  • Highest 5 October, 2021

    79 °F

Climate (2010–Present)

Kalispell, Glacier Park International Airport (30.4 miles)

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  • Average Low 2010–Present

    33.7 °F
  • Average 2010–Present

    45.3 °F
  • Average High 2010–Present

    56.7 °F
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