Sylvan - Highlands - Southwest Hills Weather Forecast

    • 48
    • 69

    Sunny

    • 56
    • 81

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 52
    • 73

    Mostly Cloudy

    • 49
    • 69

    Partly Sunny

    • 48
    • 65

    Chance Rain

    • 47
    • 63

    Rain Likely

Today 31 May West Hills and Chehalem Mountains

Sunny. Highs around 70. North wind 10 Mph.

Tonight 31 May West Hills and Chehalem Mountains

Clear. Lows in the upper 40s. North wind 10 to 15 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

    62.5 °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

    56.4 °F

  • Average High 2021–2026

    65.6 °F
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