Ainsworth State Park Weather Forecast

    • 53
    • 66

    Rain Showers

    • 54
    • 58

    Rain Showers

    • 51
    • 65

    Partly Sunny

    • 55
    • 69

    Mostly Sunny

    • 58
    • 75

    Sunny

    • 59
    • 79

    Mostly Sunny

Today 12 Sep West Columbia River Gorge I-84 Corridor

Mostly sunny Early, then rain. Highs in the lower 70s. West wind 5 to 10 Mph. Chance of rain near 100 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 12 Sep West Columbia River Gorge I-84 Corridor

Rain with a slight chance of Thunderstorms in the Evening, then rain likely after midnight. Lows in the lower 50s. Southwest wind 10 to 15 Mph. Chance of rain near 100 percent. Rainfall Amounts around a quarter of an Inch, except higher Amounts possible in Thunderstorms.

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  • Temperature Real-Time

Ainsworth State Park Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (17.4 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    63.5 °F

  • Highest 9 September, 2026

    88 °F

Climate (2021–2026)

Portland, Portland-Troutdale Airport (17.4 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    65.2 °F
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