Sylvan - Highlands - Southwest Hills Weather Forecast

    • 47
    • 63

    Decreasing Clouds

    • 45
    • 57

    Chance Rain

    • 42
    • 55

    Rain Showers

    • 45
    • 62

    Mostly Cloudy

    • 47
    • 67

    Partly Sunny

    • 48
    • 68

    Partly Sunny

    • 50
    • 71

    Partly Sunny

Today 14 May West Hills and Chehalem Mountains

Mostly cloudy with a 20 percent chance of rain. Highs in the mid 60s. West wind 5 to 10 Mph.

Tonight 14 May West Hills and Chehalem Mountains

Mostly cloudy in the Evening, then clearing. Lows in the mid 40s. West 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 9 May, 2026

    48.7 °F

  • Average May

    64.3 °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

    65.5 °F
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