Sylvan - Highlands - Southwest Hills Weather Forecast

    • 51
    • 67

    Becoming Sunny

    • 55
    • 76

    Mostly Sunny

    • 57
    • 82

    Mostly Sunny

    • 51
    • 75

    Partly Sunny

    • 51
    • 67

    Partly Sunny

    • 53
    • 67

    Partly Sunny

Today 7 Sep West Hills and Chehalem Mountains

Patchy fog this morning. Mostly sunny. Highs in the upper 60s. Light and variable Winds, becoming light this afternoon.

Tonight 7 Sep West Hills and Chehalem Mountains

Mostly clear. 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 4 September, 2026

    55.7 °F

  • Average September

    63.2 °F

  • Highest 5 September, 2026

    73 °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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