Ainsworth State Park Weather Forecast

    • 35
    • 41

    Increasing Clouds

    • 38
    • 39

    Rain

    • 40
    • 47

    Rain

    • 42
    • 47

    Rain

    • 41
    • 47

    Rain Likely

    • 39
    • 47

    Rain Likely

Today 31 Dec West Columbia River Gorge I-84 Corridor

Partly sunny this Morning, then clearing. Breezy with Highs in the mid 40s. East wind 15 to 25 Mph.

Tonight 31 Dec West Columbia River Gorge I-84 Corridor

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the mid 30s. East wind 15 to 20 Mph. Chance of rain 20 percent.

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Ainsworth State Park Temperature Statistics

December Temperature

Portland, Portland-Troutdale Airport (17.4 miles)

  • Lowest 28 December, 2025

    30.9 °F

  • Average December

    48 °F

  • Highest 10 December, 2025

    64 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (17.4 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.2 °F
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