Sylvan - Highlands - Southwest Hills Weather Forecast

    • 55
    • 77

    Increasing Clouds

    • 53
    • 79

    Chance Rain Showers

    • 48
    • 65

    Chance Rain Showers

    • 48
    • 64

    Partly Sunny

    • 45
    • 61

    Slight Chance Rain

    • 44
    • 59

    Chance Rain

    • 47
    • 63

    Partly Sunny

Today 11 May West Hills and Chehalem Mountains

Sunny. Highs in the upper 70s. North wind 5 to 10 Mph.

Tonight 11 May West Hills and Chehalem Mountains

Partly cloudy. Lows in the lower 50s. North 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

    48.9 °F

  • Average May

    64 °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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