Fish Lake Weather Forecast

    • 48
    • 74

    Increasing Clouds

    • 50
    • 82

    Mostly Cloudy

    • 44
    • 68

    Rain Likely

    • 40
    • 63

    Chance Rain

    • 43
    • 68

    Slight Chance Rain

    • 45
    • 73

    Partly Sunny

Today 31 Aug Kootenai/Cabinet Region

Mostly sunny. Areas of fog early in the morning. Highs in the upper 70s to mid 80s.

Tonight 31 Aug Kootenai/Cabinet Region

Mostly clear. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fish Lake Temperature Statistics

August Temperature

Kalispell, Glacier Park International Airport (32.9 miles)

  • Lowest 5 August, 2026

    38.6 °F

  • Average August

    65.1 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Kalispell, Glacier Park International Airport (32.9 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    57 °F
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