Kilbrennan Lake Weather Forecast

    • 49
    • 65

    Patchy Smoke

    • 54
    • 76

    Increasing Clouds

    • 58
    • 83

    Rain Likely

    • 52
    • 68

    Rain Likely

    • 50
    • 63

    Rain Showers Likely

    • 51
    • 69

    Chance Rain

    • 53
    • 73

    Slight Chance Rain

Today 30 Aug Kootenai/Cabinet Region

Mostly cloudy. A 50 percent chance of rain Showers until late afternoon. Highs in the mid 60s to lower 70s.

Tonight 30 Aug Kootenai/Cabinet Region

Mostly clear. Patchy smoke until early morning. Lows in the mid 30s to lower 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Kilbrennan Lake Temperature Statistics

August Temperature

Boundary County Airport (20.5 miles)

  • Lowest 3 August, 2026

    44.6 °F

  • Average August

    69.2 °F

  • Highest 21 August, 2026

    95 °F

Climate (2021–2026)

Boundary County Airport (20.5 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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