Benchmark Airport Weather Forecast

    • 40
    • 61

    Slight Chance Rain

    • 41
    • 72

    Mostly Sunny

    • 43
    • 74

    Mostly Sunny

    • 44
    • 73

    Mostly Sunny

    • 43
    • 72

    Mostly Sunny

    • 44
    • 71

    Partly Sunny

    • 41
    • 70

    Partly Sunny

Today 19 Sep Southern Rocky Mountain Front

Partly sunny with a 20 percent chance of rain. Highs 49 to 57.

Tonight 19 Sep Southern Rocky Mountain Front

Mostly cloudy early in the evening then becoming partly cloudy. Lows in the lower 40s. Southeast Winds up to 5 Mph shifting to the southwest after midnight.

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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

    58.2 °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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