Ninepipe Reservoir Weather Forecast

    • 48
    • 80

    Mostly Sunny

    • 48
    • 83

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 40
    • 68

    Chance Rain

    • 43
    • 70

    Mostly Sunny

    • 46
    • 78

    Mostly Sunny

Today 18 Sep Flathead/Mission Valleys

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

Tonight 18 Sep Flathead/Mission Valleys

Mostly clear. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ninepipe Reservoir Temperature Statistics

September Temperature

Missoula, Missoula International Airport (36 miles)

  • Lowest 13 September, 2025

    46.9 °F

  • Average September

    65.7 °F

  • Highest 2 September, 2025

    96.1 °F

Climate (2020–Present)

Missoula, Missoula International Airport (36 miles)

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  • Average Low 2020–2025

    35.6 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    59.2 °F
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