National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Portland, Portland International Airport (KPDX)

Lat: 45.59578°NLon: 122.60917°WElev: 20.0ft.

Rain

46°F

8°C

Humidity 79%
Wind Speed ESE 14 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 25 Dec 06:53 PM PST
Extended Forecast for

Portland OR

  • Tonight

    Tonight: Showers likely, mainly after 4am. Mostly cloudy, with a low around 39. East southeast wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 39 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Rain. Snow level 3200 feet lowering to 2100 feet in the afternoon . High near 47. West southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 4am. Snow level 1500 feet. Low around 37. Southwest wind around 7 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Rain

  • Saturday

    Saturday: A 30 percent chance of rain before 10am. Snow level 1400 feet. Mostly cloudy, with a high near 46. West southwest wind around 6 mph.

    High: 46 °F

    Chance Rain
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly after 4am. Mostly cloudy, with a low around 39. East southeast wind 3 to 5 mph. Chance of precipitation is 60%.
Friday
Rain. Snow level 3200 feet lowering to 2100 feet in the afternoon . High near 47. West southwest wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly before 4am. Snow level 1500 feet. Low around 37. Southwest wind around 7 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of rain before 10am. Snow level 1400 feet. Mostly cloudy, with a high near 46. West southwest wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 36. Calm wind.
Sunday
Mostly cloudy, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Wednesday
A chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 39.
New Year's Day
Rain likely. Cloudy, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland OR
 45.53°N 122.67°W (Elev. 200 ft)
Last Update:
6:41 pm PST Dec 25, 2025
Forecast Valid:
7pm PST Dec 25, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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Chance of Precipitation