Cascade Locks Weather Forecast

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    • 77

    Slight Chance Rain Showers

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    • 75

    Rain Showers

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    • 68

    Rain Showers

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    • 73

    Chance Rain Showers

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    • 74

    Chance Rain Showers

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    Chance Rain Showers

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    Chance Rain Showers

Today 7 Sep West Columbia River Gorge I-84 Corridor

Mostly cloudy with a slight chance of drizzle this Morning, then mostly sunny this afternoon. Highs in the mid 70s. West wind 5 to 10 Mph.

Tonight 7 Sep West Columbia River Gorge I-84 Corridor

Mostly clear this Evening, then becoming mostly cloudy. Lows in the upper 50s. Southwest wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cascade Locks Temperature Statistics

September Temperature

Portland, Portland-Troutdale Airport (26.1 miles)

  • Lowest 2 September, 2025

    55.9 °F

  • Average September

    70.8 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (26.1 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.2 °F
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