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

43°F

6°C

Humidity 93%
Wind Speed W 4 MPH
Barometer 29.48 in (998.31 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 25 Dec 08:55 AM PST
Extended Forecast for

Milwaukie OR

  • Christmas Day

    Christmas Day: A 50 percent chance of rain, mainly between 3pm and 4pm. Partly sunny, with a high near 53. Northeast wind around 6 mph becoming south southeast in the afternoon.

    High: 53 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly after 3am. Increasing clouds, with a low around 41. Light east southeast wind. Chance of precipitation is 60%.

    Low: 41 °F

    Slight Chance
    Rain then
    Rain Likely

  • Friday

    Friday: Showers. High near 47. Southwest wind 6 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

    Showers

  • Friday Night

    Friday Night: Showers, mainly before 4am. Snow level 1600 feet. Low around 37. Southwest wind around 7 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Showers

  • Saturday

    Saturday: A 30 percent chance of showers before 10am. Snow level 1500 feet. Mostly cloudy, with a high near 45. West southwest wind around 6 mph.

    High: 45 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

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

    Low: 34 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 45.

    High: 45 °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 50 percent chance of rain, mainly between 3pm and 4pm. Partly sunny, with a high near 53. Northeast wind around 6 mph becoming south southeast in the afternoon.
Tonight
Rain likely, mainly after 3am. Increasing clouds, with a low around 41. Light east southeast wind. Chance of precipitation is 60%.
Friday
Showers. High near 47. Southwest wind 6 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
Showers, mainly before 4am. Snow level 1600 feet. Low around 37. Southwest wind around 7 mph. Chance of precipitation is 90%.
Saturday
A 30 percent chance of showers before 10am. Snow level 1500 feet. Mostly cloudy, with a high near 45. West southwest wind around 6 mph.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 34.
Sunday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 45.
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 34.
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 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Milwaukie OR
 45.42°N 122.64°W (Elev. 200 ft)
Last Update:
8:41 am PST Dec 25, 2025
Forecast Valid:
9am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation