Upsata Lake Weather Forecast

    • 38
    • 79

    Slight Chance Thunderstorms

    • 39
    • 79

    Partly Sunny

    • 36
    • 68

    Chance Thunderstorms

    • 35
    • 72

    Chance Rain Showers

    • 36
    • 79

    Mostly Sunny

    • 36
    • 76

    Partly Sunny

Today 13 Sep Butte/Blackfoot Region

Mostly sunny in the Morning, then mostly cloudy with a 20 percent chance of Showers and Thunderstorms in the afternoon. Patchy fog in the morning. Highs in the upper 60s to mid 70s.

Tonight 13 Sep Butte/Blackfoot Region

Partly cloudy. Lows in the upper 30s to mid 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Upsata Lake Temperature Statistics

September Temperature

Missoula, Missoula International Airport (42.3 miles)

  • Lowest 9 September, 2025

    48 °F

  • Average September

    69 °F

  • Highest 2 September, 2025

    96.1 °F

Climate (2020–Present)

Missoula, Missoula International Airport (42.3 miles)

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  • Average Low 2020–2025

    35.6 °F

  • Average 2020–2025

    47.1 °F

  • Average High 2020–2025

    59.3 °F
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