Fish Lake Weather Forecast

    • 46
    • 73

    Decreasing Clouds

    • 45
    • 67

    Partly Sunny

    • 50
    • 74

    Mostly Cloudy

    • 42
    • 69

    Chance Rain

    • 38
    • 50

    Mostly Cloudy

    • 40
    • 54

    Mostly Cloudy

Today 22 Sep Kootenai/Cabinet Region

Mostly cloudy. Highs in the mid 70s to lower 80s.

Tonight 22 Sep Kootenai/Cabinet Region

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fish Lake Temperature Statistics

September Temperature

Kalispell, Glacier Park International Airport (32.9 miles)

  • Lowest 17 September, 2026

    38.6 °F

  • Average September

    56.9 °F

  • Highest 1 September, 2026

    84.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (32.9 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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