Costich Lake Weather Forecast

    • 44
    • 70

    Decreasing Clouds

    • 29
    • 55

    Chance Rain/Snow

    • 33
    • 56

    Partly Sunny

    • 33
    • 59

    Mostly Sunny

    • 38
    • 65

    Partly Sunny

    • 40
    • 67

    Chance Rain

    • 36
    • 57

    Chance Rain/Snow

Today 6 Apr Kootenai/Cabinet Region

Mostly cloudy. Highs in the upper 60s to mid 70s.

Tonight 6 Apr Kootenai/Cabinet Region

Mostly cloudy in the evening then clearing. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Costich Lake Temperature Statistics

April Temperature

Kalispell, Glacier Park International Airport (52.8 miles)

  • Lowest 4 April, 2026

    25 °F

  • Average April

    40 °F

  • Highest 4 April, 2026

    57 °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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