Ninepipe Reservoir Weather Forecast

    • 47
    • 78

    Increasing Clouds

    • 48
    • 82

    Sunny

    • 54
    • 86

    Mostly Sunny

    • 52
    • 83

    Slight Chance Thunderstorms

    • 51
    • 78

    Chance Rain

    • 48
    • 76

    Chance Rain

Today 4 Sep Flathead/Mission Valleys

Mostly sunny. Areas of smoke through the day. Not as warm. Highs in the mid 70s to lower 80s. Northeast Winds 15 to 20 Mph.

Tonight 4 Sep Flathead/Mission Valleys

Mostly clear. Areas of smoke in the evening. Haze after midnight. Lows in the mid 40s to lower 50s. Northeast Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ninepipe Reservoir Temperature Statistics

September Temperature

Missoula, Missoula International Airport (36 miles)

  • Lowest 1 September, 2025

    52 °F

  • Average September

    72.3 °F

  • Highest 1 September, 2025

    93.9 °F

Climate (2020–Present)

Missoula, Missoula International Airport (36 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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