Lewis And Clark Weather Forecast

    • 46
    • 78

    Becoming Sunny

    • 46
    • 82

    Mostly Sunny

    • 47
    • 83

    Mostly Sunny

    • 50
    • 84

    Partly Sunny

    • 49
    • 81

    Partly Sunny

    • 45
    • 70

    Partly Sunny

Today 16 Sep Missoula/Bitterroot Valleys

Warmer. Mostly sunny. Highs in the mid 70s. Southeast Winds up to 5 Mph shifting to the northeast in the afternoon.

Tonight 16 Sep Missoula/Bitterroot Valleys

Mostly clear. Lows in the lower 40s. Northeast Winds up to 10 Mph shifting to the southeast after midnight.

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Lewis And Clark Temperature Statistics

September Temperature

Missoula, Missoula International Airport (6.2 miles)

  • Lowest 13 September, 2025

    46.9 °F

  • Average September

    67.3 °F

  • Highest 2 September, 2025

    96.1 °F

Climate (2020–Present)

Missoula, Missoula International Airport (6.2 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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