Willamette River - Portland Morrison Street Bridge Weather Forecast

    • 61
    • 78

    Rain Showers

    • 50
    • 70

    Rain Showers

    • 56
    • 75

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 54
    • 75

    Slight Chance Rain Showers

    • 51
    • 73

    Partly Sunny

    • 54
    • 76

    Partly Sunny

Today 13 Sep Inner Portland Metro

Partly sunny this Morning, then clearing. Highs around 80. Winds light.

Tonight 13 Sep Inner Portland Metro

Mostly cloudy. Showers after midnight. Lows around 60. Winds light. Chance of rain 80 percent. Rainfall Amounts a tenth to a quarter of an inch.

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Willamette River - Portland Morrison Street Bridge Temperature Statistics

September Temperature

Portland, Portland International Airport (5.6 miles)

  • Lowest 8 September, 2025

    57 °F

  • Average September

    69.1 °F

  • Highest 2 September, 2025

    89.1 °F

Climate (2020–Present)

Portland, Portland International Airport (5.6 miles)

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  • Average Low 2020–2025

    48.3 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    65.3 °F
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