Benchmark Airport Weather Forecast

    • 33
    • 77

    Chance Thunderstorms

    • 28
    • 52

    Partly Sunny

    • 34
    • 60

    Mostly Cloudy

    • 35
    • 64

    Mostly Sunny

    • 37
    • 61

    Partly Sunny

    • 36
    • 61

    Partly Sunny

    • 36
    • 60

    Mostly Cloudy

Today 25 Sep Southern Rocky Mountain Front

Partly sunny with a 50 percent chance of rain and snow. Highs 42 to 52.

Tonight 25 Sep Southern Rocky Mountain Front

Windy. Much Colder. Partly cloudy with a 20 percent chance of rain and snow. Lows 29 to 35. West Winds 20 to 30 Mph with Gusts to around 80 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Benchmark Airport Temperature Statistics

September Temperature

Missoula, Missoula International Airport (69 miles)

  • Lowest 9 September, 2026

    38.6 °F

  • Average September

    58.9 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (69 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    59.7 °F
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