Ainsworth State Park Weather Forecast

    • 43
    • 50

    Rain Showers

    • 45
    • 58

    Mostly Cloudy

    • 43
    • 63

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 47
    • 67

    Mostly Sunny

    • 48
    • 68

    Partly Sunny

Today 16 May West Columbia River Gorge I-84 Corridor

Showers with a chance of Thunderstorms. Highs in the mid 50s. Southwest wind 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent. Rainfall Amounts a quarter to a half of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 16 May West Columbia River Gorge I-84 Corridor

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the evening. Lows in the lower 40s. Southwest wind 10 to 15 Mph. Gusts up to 35 Mph in the evening. Chance of rain 60 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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Ainsworth State Park Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (17.4 miles)

  • Lowest 9 May, 2026

    45.6 °F

  • Average May

    63.3 °F

  • Highest 3 May, 2026

    91.7 °F

Climate (2021–Present)

Portland, Portland-Troutdale Airport (17.4 miles)

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  • Average Low 2021–2026

    47.7 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.3 °F
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