Throop Lake Weather Forecast

    • 48
    • 79

    Mostly Cloudy

    • 45
    • 81

    Slight Chance Rain

    • 45
    • 74

    Chance Rain Showers

    • 42
    • 71

    Rain Likely

    • 41
    • 66

    Chance Rain

    • 41
    • 69

    Partly Sunny

    • 42
    • 73

    Chance Rain

Today 9 Sep Kootenai/Cabinet Region

Partly cloudy. Areas of fog early in the morning. Highs in the 70s.

Tonight 9 Sep Kootenai/Cabinet Region

Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy then becoming mostly cloudy late in the night. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Throop Lake Temperature Statistics

September Temperature

Boundary County Airport (29.2 miles)

  • Lowest 5 September, 2026

    42.8 °F

  • Average September

    56.6 °F

  • Highest 1 September, 2026

    78.8 °F

Climate (2021–2026)

Boundary County Airport (29.2 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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