Sumner Weather Forecast

    • 42
    • 60

    Mostly Sunny

    • 41
    • 64

    Sunny

    • 43
    • 64

    Mostly Sunny

    • 50
    • 60

    Chance Rain Showers

    • 46
    • 63

    Partly Sunny

    • 51
    • 65

    Rain Showers

Today 13 Oct Inner Portland Metro

Mostly sunny. A slight chance of rain Showers this morning. Highs in the lower 60s. Northeast wind 5 to 10 Mph. Chance of rain 20 percent.

Tonight 13 Oct Inner Portland Metro

Clear. Lows in the lower 40s. Northeast wind 5 to 10 Mph.

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Sumner Temperature Statistics

October Temperature

Portland, Portland International Airport (3.1 miles)

  • Lowest 9 October, 2025

    45 °F

  • Average October

    58.6 °F

  • Highest 7 October, 2025

    79 °F

Climate (2020–Present)

Portland, Portland International Airport (3.1 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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