Sylvan - Highlands - Southwest Hills Weather Forecast

    • 54
    • 75

    Increasing Clouds

    • 47
    • 62

    Rain Showers

    • 47
    • 63

    Rain Showers Likely

    • 50
    • 68

    Mostly Cloudy

    • 51
    • 73

    Mostly Cloudy

    • 46
    • 64

    Mostly Cloudy

    • 46
    • 63

    Partly Sunny

Today 24 May West Hills and Chehalem Mountains

Sunny. Highs in the mid 70s. Winds light.

Tonight 24 May West Hills and Chehalem Mountains

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the lower 50s. Southwest wind 5 to 10 Mph.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

May Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 17 May, 2026

    41.6 °F

  • Average May

    62.2 °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

    56.4 °F

  • Average High 2021–2026

    65.6 °F
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