Ainsworth State Park Weather Forecast

    • 59
    • 81

    Increasing Clouds

    • 52
    • 70

    Mostly Cloudy

    • 53
    • 65

    Mostly Cloudy

    • 53
    • 58

    Rain Likely

    • 53
    • 64

    Chance Rain

    • 55
    • 70

    Mostly Sunny

Today 9 Sep West Columbia River Gorge I-84 Corridor

Sunny. Highs in the upper 80s. Northeast wind 5 to 10 Mph, becoming west this afternoon.

Tonight 9 Sep West Columbia River Gorge I-84 Corridor

Mostly clear in the Evening, then becoming partly cloudy. Lows around 60. Southwest wind 5 to 10 Mph.

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Ainsworth State Park Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (17.4 miles)

  • Lowest 5 September, 2026

    51.7 °F

  • Average September

    62.2 °F

  • Highest 5 September, 2026

    73.7 °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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