Sylvan - Highlands - Southwest Hills Weather Forecast

    • 50
    • 66

    Increasing Clouds

    • 52
    • 64

    Mostly Cloudy

    • 51
    • 66

    Partly Sunny

    • 53
    • 71

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 53
    • 70

    Mostly Sunny

Today 28 Sep West Hills and Chehalem Mountains

Sunny. Highs in the upper 60s. Light and variable Winds.

Tonight 28 Sep West Hills and Chehalem Mountains

Partly cloudy. Lows in the upper 40s. Light and variable Winds, becoming light after midnight.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

September Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 26 September, 2026

    48 °F

  • Average September

    64.2 °F

  • Highest 9 September, 2026

    88.6 °F

Climate (2021–2026)

Portland, Portland International Airport (8.1 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.4 °F
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