Fish Lake Weather Forecast

    • 53
    • 65

    Chance Thunderstorms

    • 54
    • 71

    Slight Chance Thunderstorms

    • 53
    • 77

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

    • 50
    • 69

    Mostly Sunny

    • 50
    • 73

    Mostly Sunny

Today 17 Aug Northern Clearwater Mountains

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

Tonight 17 Aug Northern Clearwater Mountains

Mostly clear. A 20 percent chance of Showers and Thunderstorms after midnight. Lows in the upper 40s to mid 50s.

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Fish Lake Temperature Statistics

August Temperature

Missoula, Missoula International Airport (39.1 miles)

  • Lowest 8 August, 2025

    47.6 °F

  • Average August

    68 °F

  • Highest 12 August, 2025

    94.6 °F

Climate (2020–Present)

Missoula, Missoula International Airport (39.1 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    59.2 °F
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