Sylvan - Highlands - Southwest Hills Weather Forecast

    • 52
    • 57

    Rain Showers

    • 50
    • 55

    Rain Showers

    • 45
    • 54

    Mostly Cloudy

    • 45
    • 53

    Rain Likely

    • 48
    • 52

    Rain

    • 47
    • 56

    Rain

    • 45
    • 51

    Rain

Today 10 Dec West Hills and Chehalem Mountains

Showers likely. Highs in the upper 50s. Southwest wind 15 to 20 Mph. Chance of rain 70 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 10 Dec West Hills and Chehalem Mountains

Showers likely. Lows in the lower 50s. Southwest wind 15 to 20 Mph. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an inch.

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Sylvan - Highlands - Southwest Hills Temperature Statistics

December Temperature

Portland, Portland International Airport (8.1 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    47.9 °F

  • Highest 5 December, 2025

    57.9 °F

Climate (2020–Present)

Portland, Portland International Airport (8.1 miles)

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  • Average Low 2020–2025

    48.4 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.4 °F
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