Costich Lake Weather Forecast

    • 23
    • 45

    Partly Sunny

    • 25
    • 47

    Mostly Sunny

    • 28
    • 49

    Mostly Sunny

    • 34
    • 50

    Mostly Cloudy

    • 32
    • 47

    Chance Rain

    • 31
    • 46

    Slight Chance Rain

Today 28 Feb Kootenai/Cabinet Region

Partly cloudy. Highs in the 40s.

Tonight 28 Feb Kootenai/Cabinet Region

Mostly clear. Lows in the 20s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costich Lake Temperature Statistics

February Temperature

Kalispell, Glacier Park International Airport (52.8 miles)

  • Lowest 21 February, 2026

    3.7 °F

  • Average February

    32.1 °F

  • Highest 5 February, 2026

    54.6 °F

Climate (2021–Present)

Kalispell, Glacier Park International Airport (52.8 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57.2 °F
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