Troy Airport Weather Forecast

    • 45
    • 67

    Rain

    • 43
    • 70

    Chance Rain

    • 46
    • 77

    Mostly Sunny

    • 44
    • 78

    Partly Sunny

    • 41
    • 69

    Chance Rain

    • 37
    • 65

    Chance Rain

    • 38
    • 67

    Partly Sunny

Today 7 Sep Kootenai/Cabinet Region

Areas of rain early in the morning. Rain likely late in the Morning, then rain Showers likely and a chance of Thunderstorms in the afternoon. Patchy fog in the morning. Chance of precipitation 90 percent. Highs in the mid 50s to lower 60s.

Tonight 7 Sep Kootenai/Cabinet Region

Rain likely. Patchy fog after midnight. Chance of rain near 100 percent. 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

    56.7 °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

    56.7 °F
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