Costich Lake Weather Forecast

    • 53
    • 83

    Chance Rain

    • 50
    • 73

    Chance Thunderstorms

    • 51
    • 82

    Partly Sunny

    • 55
    • 89

    Sunny

    • 58
    • 95

    Mostly Sunny

    • 59
    • 98

    Hot

Today 4 Jul Kootenai/Cabinet Region

Mostly sunny in the morning then becoming mostly cloudy. Highs in the upper 70s to mid 80s.

Tonight 4 Jul Kootenai/Cabinet Region

Cloudy. Chance of rain Showers and a slight chance of Thunderstorms in the Evening, then a chance of rain after midnight. Chance of precipitation 50 percent. Lows in the upper 40s to mid 50s.

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Costich Lake Temperature Statistics

July Temperature

Kalispell, Glacier Park International Airport (52.8 miles)

  • Lowest 1 July, 2025

    52 °F

  • Average July

    71.9 °F

  • Highest 1 July, 2025

    90 °F

Climate (2020–Present)

Kalispell, Glacier Park International Airport (52.8 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    45 °F

  • Average High 2020–2025

    56.8 °F
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