Sylvan - Highlands - Southwest Hills Weather Forecast

    • 56
    • 82

    Increasing Clouds

    • 55
    • 68

    Rain Likely

    • 51
    • 62

    Rain Showers

    • 50
    • 63

    Rain Showers

    • 52
    • 65

    Chance Rain

    • 53
    • 69

    Partly Sunny

Today 31 Aug West Hills and Chehalem Mountains

Mostly sunny. Highs in the mid 80s. Winds light.

Tonight 31 Aug West Hills and Chehalem Mountains

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 50s. Winds Light, becoming south 5 to 10 Mph after midnight.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

August Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 3 August, 2026

    55.7 °F

  • Average August

    72 °F

  • Highest 6 August, 2026

    94.6 °F

Climate (2021–2026)

Portland, Portland International Airport (8.1 miles)

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.5 °F
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