Troy Airport Weather Forecast

    • 45
    • 80

    Chance Rain

    • 43
    • 67

    Chance Rain

    • 40
    • 68

    Rain

    • 40
    • 63

    Rain Likely

    • 39
    • 61

    Partly Sunny

    • 40
    • 66

    Partly Sunny

    • 41
    • 71

    Mostly Sunny

Today 10 Sep Kootenai/Cabinet Region

Mostly cloudy. A 20 percent chance of rain early in the morning. Highs in the mid 70s to lower 80s.

Tonight 10 Sep Kootenai/Cabinet Region

Mostly cloudy with a 40 percent chance of Areas of rain. Lows in the 40s.

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Troy Airport Temperature Statistics

September Temperature

Boundary County Airport (24.2 miles)

  • Lowest 5 September, 2026

    42.8 °F

  • Average September

    56.5 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Boundary County Airport (24.2 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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