Olson Airport Weather Forecast

    • 50
    • 71

    Mostly Sunny

    • 55
    • 77

    Partly Sunny

    • 54
    • 73

    Chance Rain Showers

    • 53
    • 73

    Mostly Sunny

    • 53
    • 75

    Mostly Sunny

    • 54
    • 77

    Partly Sunny

Today 16 Sep Flathead/Mission Valleys

Mostly sunny. Highs in the mid 60s to lower 70s.

Tonight 16 Sep Flathead/Mission Valleys

Mostly clear. Lows in the 40s.

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Olson Airport Temperature Statistics

September Temperature

Missoula, Missoula International Airport (46 miles)

  • Lowest 9 September, 2026

    38.6 °F

  • Average September

    59.5 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Missoula, Missoula International Airport (46 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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