Columbia River - McGuire Island Weather Forecast

    • 62
    • 79

    Rain

    • 58
    • 71

    Rain Likely

    • 53
    • 73

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 60
    • 82

    Partly Sunny

    • 66
    • 92

    Mostly Sunny

    • 64
    • 93

    Mostly Sunny

Today 5 Aug East Portland Metro

Mostly sunny. Highs in the lower 80s. Winds light.

Tonight 5 Aug East Portland Metro

Partly cloudy this Evening, then cloudy with rain likely after midnight. Lows around 60. Winds light. Chance of rain 70 percent. Rainfall Amounts less than a tenth of an inch.

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Columbia River - McGuire Island Temperature Statistics

August Temperature

Portland, Portland-Troutdale Airport (2.5 miles)

  • Lowest 3 August, 2025

    59 °F

  • Average August

    67.5 °F

  • Highest 1 August, 2025

    84.2 °F

Climate (2020–Present)

Portland, Portland-Troutdale Airport (2.5 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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