Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Portland, Portland International Airport (KPDX)

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

Mostly Cloudy

13°C

56°F

Humidity 86%
Wind Speed SSW 14 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 11°C (52°F)
Visibility 16 km
Last update 07 Dec 12:53 PM PST
Extended Forecast for

Portland OR

Flood Watch December 8, 04:00am until December 12, 04:00am
Wind Advisory December 8, 07:00am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  • This Afternoon

    This Afternoon: Rain likely, mainly between 4pm and 5pm.  Mostly cloudy, with a high near 13. South southwest wind 14 to 16 km/h, with gusts as high as 35 km/h.  Chance of precipitation is 60%.

    High: 13 °C

    Rain Likely

  • Tonight

    Tonight: Rain likely, mainly after 3am.  Mostly cloudy, with a low around 10. South wind 8 to 10 km/h.  Chance of precipitation is 70%. New precipitation amounts between 1 and 2.5 mm possible.

    Low: 10 °C

    Chance Rain
    then Rain
    Likely

  • Monday

    Monday: Rain.  High near 14. Breezy, with a south southwest wind 18 to 26 km/h, with gusts as high as 48 km/h.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 cm possible.

    High: 14 °C

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain.  Low around 9. Breezy, with a south southwest wind 23 to 26 km/h, with gusts as high as 50 km/h.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.

    Low: 9 °C

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain.  High near 14. East northeast wind around 11 km/h becoming south southwest in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.

    High: 14 °C

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 11. Breezy.  Chance of precipitation is 100%.

    Low: 11 °C

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 14. Chance of precipitation is 100%.

    High: 14 °C

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 12.

    Low: 12 °C

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 4pm.  Cloudy, with a high near 15.

    High: 15 °C

    Rain Likely

Detailed Forecast

This Afternoon
Rain likely, mainly between 4pm and 5pm. Mostly cloudy, with a high near 13. South southwest wind 14 to 16 km/h, with gusts as high as 35 km/h. Chance of precipitation is 60%.
Tonight
Rain likely, mainly after 3am. Mostly cloudy, with a low around 10. South wind 8 to 10 km/h. Chance of precipitation is 70%. New precipitation amounts between 1 and 2.5 mm possible.
Monday
Rain. High near 14. Breezy, with a south southwest wind 18 to 26 km/h, with gusts as high as 48 km/h. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 cm possible.
Monday Night
Rain. Low around 9. Breezy, with a south southwest wind 23 to 26 km/h, with gusts as high as 50 km/h. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.
Tuesday
Rain. High near 14. East northeast wind around 11 km/h becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.
Tuesday Night
Rain. Low around 11. Breezy. Chance of precipitation is 100%.
Wednesday
Rain. High near 14. Chance of precipitation is 100%.
Wednesday Night
Rain. Cloudy, with a low around 12.
Thursday
Rain likely, mainly before 4pm. Cloudy, with a high near 15.
Thursday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 11.
Friday
A slight chance of rain. Mostly cloudy, with a high near 15.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 9.
Saturday
A chance of rain. Mostly cloudy, with a high near 13.
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ABOUT THIS FORECAST

 
Point Forecast:
Portland OR
 45.53°N 122.67°W (Elev. 200 m)
1:00 pm PST Dec 7, 2025
1pm PST Dec 7, 2025-6pm PST Dec 13, 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