Sumner Weather Forecast

    • 48
    • 72

    Sunny

    • 51
    • 79

    Partly Sunny

    • 52
    • 76

    Mostly Cloudy

    • 54
    • 77

    Mostly Cloudy

    • 56
    • 87

    Mostly Sunny

    • 53
    • 74

    Mostly Cloudy

    • 52
    • 72

    Partly Sunny

Today 29 Apr Inner Portland Metro

Sunny. Highs in the lower 70s. North wind 5 to 10 Mph.

Tonight 29 Apr Inner Portland Metro

Clear. Lows in the upper 40s. North wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

April Temperature

Portland, Portland International Airport (3.1 miles)

  • Lowest 3 April, 2026

    37.7 °F

  • Average April

    54.8 °F

  • Highest 5 April, 2026

    79.6 °F

Climate (2021–Present)

Portland, Portland International Airport (3.1 miles)

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  • Average Low 2021–2026

    48.4 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    65.5 °F
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