Sylvan - Highlands - Southwest Hills Weather Forecast

    • 49
    • 68

    Becoming Sunny

    • 53
    • 75

    Partly Sunny

    • 49
    • 70

    Partly Sunny

    • 53
    • 76

    Mostly Sunny

    • 55
    • 79

    Partly Sunny

    • 53
    • 75

    Partly Sunny

    • 51
    • 70

    Chance Rain

Today 8 May West Hills and Chehalem Mountains

Sunny. Highs in the upper 60s. Winds light.

Tonight 8 May West Hills and Chehalem Mountains

Partly cloudy in the Evening, then clearing. Lows in the upper 40s. Winds light.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

May Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 2 May, 2026

    51.7 °F

  • Average May

    64.5 °F

  • Highest 3 May, 2026

    91.7 °F

Climate (2021–Present)

Portland, Portland International Airport (8.1 miles)

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  • Average Low 2021–2026

    48.4 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.5 °F
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