Olson Airport Weather Forecast

    • 45
    • 61

    Rain Showers

    • 46
    • 60

    Rain Likely

    • 48
    • 65

    Mostly Cloudy

    • 48
    • 66

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

Today 13 Sep Flathead/Mission Valleys

Rain likely in the Morning, then rain Showers likely and a slight chance of Thunderstorms in the afternoon. Chance of precipitation near 100 percent. Highs in the mid 50s to lower 60s.

Tonight 13 Sep Flathead/Mission Valleys

A chance of rain in the Evening, then rain likely after midnight. Chance of rain 80 percent. Lows in the upper 30s to mid 40s.

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  • Temperature Real-Time

Olson Airport Temperature Statistics

September Temperature

Missoula, Missoula International Airport (46 miles)

  • Lowest 9 September, 2026

    39.9 °F

  • Average September

    59 °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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