Libby Airport Weather Forecast

    • 41
    • 69

    Rain

    • 41
    • 59

    Rain

    • 40
    • 61

    Chance Rain

    • 41
    • 65

    Mostly Cloudy

    • 40
    • 70

    Mostly Sunny

    • 42
    • 75

    Mostly Sunny

    • 44
    • 77

    Mostly Sunny

Today 12 Sep Kootenai/Cabinet Region

Mostly cloudy. Patchy fog early in the morning. Highs in the mid 60s to lower 70s.

Tonight 12 Sep Kootenai/Cabinet Region

Partly cloudy until early morning then becoming mostly cloudy. Lows in the 40s.

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Libby Airport Temperature Statistics

September Temperature

Boundary County Airport (47.8 miles)

  • Lowest 5 September, 2026

    42.8 °F

  • Average September

    57.5 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Boundary County Airport (47.8 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    56.6 °F
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