Brown's Cape Horn Airport Weather Forecast

    • 53
    • 76

    Increasing Clouds

    • 54
    • 80

    Decreasing Clouds

    • 53
    • 81

    Mostly Sunny

    • 59
    • 90

    Sunny

    • 61
    • 96

    Sunny

    • 58
    • 92

    Mostly Sunny

    • 56
    • 88

    Mostly Sunny

Today 18 Aug South Washington Cascades

Mostly sunny. Free air freezing level 12000 feet. Southwest wind 5 to 10 Mph.

Tonight 18 Aug South Washington Cascades

Mostly clear this Evening, then becoming partly cloudy. Free air freezing level 13000 feet. West wind 5 to 10 Mph.

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Brown's Cape Horn Airport Temperature Statistics

August Temperature

Portland, Portland-Troutdale Airport (10.6 miles)

  • Lowest 8 August, 2025

    50.6 °F

  • Average August

    70.5 °F

  • Highest 10 August, 2025

    100.7 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (10.6 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.1 °F
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