Costich Lake Weather Forecast

    • 41
    • 50

    Rain Likely

    • 27
    • 51

    Rain

    • 22
    • 40

    Chance Snow

    • 23
    • 39

    Snow Likely

    • 31
    • 43

    Snow

    • 26
    • 46

    Snow

Today 7 Mar Kootenai/Cabinet Region

Mostly cloudy with a 50 percent chance of Areas of rain. Highs in the upper 40s to mid 50s.

Tonight 7 Mar Kootenai/Cabinet Region

Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s to mid 40s.

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Costich Lake Temperature Statistics

March Temperature

Kalispell, Glacier Park International Airport (52.8 miles)

  • Lowest 2 March, 2026

    18 °F

  • Average March

    37.4 °F

  • Highest 3 March, 2026

    55 °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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