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.

Mostly Cloudy

48°F

9°C

Humidity 81%
Wind Speed ESE 6 MPH
Barometer 29.61 in (1002.71 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 25 Dec 12:35 PM PST
Extended Forecast for

2 Miles NNE Portland International Airport OR

  • Christmas Day

    Christmas Day: A 40 percent chance of rain, mainly before 5pm. Partly sunny, with a high near 53. Southeast wind 6 to 8 mph.

    High: 53 °F

    Chance Rain

  • Tonight

    Tonight: A chance of rain between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 40. East southeast wind around 6 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers. High near 47. West southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Showers

  • Friday Night

    Friday Night: Showers, mainly before 4am. Snow level 1500 feet. Low around 36. Southwest wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 10am. Snow level 1400 feet. Mostly cloudy, with a high near 45. West wind around 6 mph.

    High: 45 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 46.

    High: 46 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

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

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

Christmas Day
A 40 percent chance of rain, mainly before 5pm. Partly sunny, with a high near 53. Southeast wind 6 to 8 mph.
Tonight
A chance of rain between 1am and 4am, then showers likely after 4am. Increasing clouds, with a low around 40. East southeast wind around 6 mph. Chance of precipitation is 60%.
Friday
Showers. High near 47. West southwest wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly before 4am. Snow level 1500 feet. Low around 36. Southwest wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 30 percent chance of showers before 10am. Snow level 1400 feet. Mostly cloudy, with a high near 45. West wind around 6 mph.
Saturday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 34.
Sunday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 47.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Portland International Airport OR
 45.61°N 122.57°W (Elev. 200 ft)
Last Update:
12:41 pm PST Dec 25, 2025
Forecast Valid:
12pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation