Olson Airport Weather Forecast

    • 53
    • 79

    Mostly Sunny

    • 53
    • 84

    Sunny

    • 54
    • 86

    Mostly Sunny

    • 56
    • 86

    Partly Sunny

    • 55
    • 83

    Partly Sunny

    • 50
    • 72

    Partly Sunny

Today 16 Sep Flathead/Mission Valleys

Warmer, sunny. Highs 72 to 78. North Winds up to 5 Mph.

Tonight 16 Sep Flathead/Mission Valleys

Mostly clear. Lows 46 to 52. Northeast Winds up to 5 Mph.

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Olson Airport Temperature Statistics

September Temperature

Missoula, Missoula International Airport (46 miles)

  • Lowest 13 September, 2025

    46.9 °F

  • Average September

    66.7 °F

  • Highest 2 September, 2025

    96.1 °F

Climate (2020–Present)

Missoula, Missoula International Airport (46 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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