Costich Lake Weather Forecast

    • 41
    • 53

    Rain Likely

    • 43
    • 56

    Rain

    • 41
    • 55

    Rain

    • 28
    • 52

    Chance Rain

    • 29
    • 51

    Partly Sunny

    • 32
    • 54

    Mostly Cloudy

Today 18 Mar Kootenai/Cabinet Region

Rain likely in the Morning, then Areas of rain in the afternoon. Chance of rain 70 percent. Highs in the upper 40s to mid 50s.

Tonight 18 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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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costich Lake Temperature Statistics

March Temperature

Kalispell, Glacier Park International Airport (52.8 miles)

  • Lowest 15 March, 2026

    12.9 °F

  • Average March

    35.5 °F

  • Highest 3 March, 2026

    56.6 °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

    57.1 °F
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