Portland Weather Forecast

    • 41
    • 48

    Rain Showers

    • 42
    • 50

    Rain

    • 40
    • 49

    Chance Rain

    • 39
    • 48

    Chance Rain

    • 40
    • 50

    Chance Rain/Snow

    • 38
    • 50

    Chance Rain/Snow

Today 21 Dec Inner Portland Metro

Cloudy. A slight chance of rain Showers this Morning, then rain Showers this afternoon. Highs in the upper 40s. Winds light. Chance of rain 90 percent. Rainfall Amounts around a tenth of an inch.

Tonight 21 Dec Inner Portland Metro

Rain Showers in the Evening, then rain likely after midnight. Lows in the lower 40s. South wind 5 to 10 Mph. Chance of rain 90 percent. Rainfall Amounts a tenth to a quarter of an inch.

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Portland Temperature Statistics

December Temperature

Portland, Portland International Airport (5.6 miles)

  • Lowest 1 December, 2025

    33.1 °F

  • Average December

    50.1 °F

  • Highest 10 December, 2025

    62.1 °F

Climate (2020–Present)

Portland, Portland International Airport (5.6 miles)

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  • Average Low 2020–2025

    48.4 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.4 °F
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