Columbia River - Chinook Landing Weather Forecast

    • 45
    • 62

    Rain Showers

    • 48
    • 62

    Rain Showers

    • 45
    • 63

    Chance Rain Showers

    • 48
    • 66

    Mostly Cloudy

    • 48
    • 69

    Mostly Cloudy

    • 47
    • 66

    Slight Chance Rain Showers

Today 18 May East Portland Metro

Mostly cloudy in the Morning, then becoming partly sunny. A 50 percent chance of Showers. Highs in the lower 60s. West wind 5 to 10 Mph. Rainfall Amounts less than a tenth of an inch.

Tonight 18 May East Portland Metro

Mostly cloudy in the Evening, then partly cloudy with Showers after midnight. Lows in the mid 40s. West wind 5 to 10 Mph, becoming light after midnight. Chance of rain 90 percent. Rainfall Amounts less than a tenth of an inch.

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Columbia River - Chinook Landing Temperature Statistics

May Temperature

Portland, Portland-Troutdale Airport (1.2 miles)

  • Lowest 4 May, 2025

    37.7 °F

  • Average May

    57.1 °F

  • Highest 6 May, 2025

    81.6 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (1.2 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    56 °F

  • Average High 2020–2025

    65.1 °F
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