Sylvan - Highlands - Southwest Hills Weather Forecast

    • 51
    • 66

    Increasing Clouds

    • 52
    • 66

    Mostly Cloudy

    • 54
    • 76

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 53
    • 73

    Partly Sunny

Today 14 Sep West Hills and Chehalem Mountains

Patchy fog this morning. Mostly sunny. Highs in the upper 60s. Winds light.

Tonight 14 Sep West Hills and Chehalem Mountains

Partly cloudy. Lows in the lower 50s. Winds light.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

September Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 8 September, 2026

    51.7 °F

  • Average September

    64.6 °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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