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

57°F

14°C

Humidity 71%
Wind Speed SW 12 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 07 Dec 03:00 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: Showers likely, mainly between 4pm and 5pm.  Mostly cloudy, with a high near 56. South southwest wind around 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers likely, mainly after 3am.  Mostly cloudy, with a low around 50. South wind around 6 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers before 10am, then rain, mainly after 10am.  High near 58. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Rain.  Low around 49. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 32 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 49 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain.  High near 57. East northeast wind around 7 mph becoming south southwest in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 51. Breezy.  Chance of precipitation is 100%.

    Low: 51 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 58. Chance of precipitation is 100%.

    High: 58 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 53.

    Low: 53 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 4pm.  Cloudy, with a high near 59.

    High: 59 °F

    Rain Likely

Detailed Forecast

This Afternoon
Showers likely, mainly between 4pm and 5pm. Mostly cloudy, with a high near 56. South southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tonight
Showers likely, mainly after 3am. Mostly cloudy, with a low around 50. South wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers before 10am, then rain, mainly after 10am. High near 58. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 49. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain. High near 57. East northeast wind around 7 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain. Low around 51. Breezy. Chance of precipitation is 100%.
Wednesday
Rain. High near 58. Chance of precipitation is 100%.
Wednesday Night
Rain. Cloudy, with a low around 53.
Thursday
Rain likely, mainly before 4pm. Cloudy, with a high near 59.
Thursday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 51.
Friday
A slight chance of rain. Mostly cloudy, with a high near 59.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Saturday
A chance of rain. Mostly cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Portland OR
 45.53°N 122.67°W (Elev. 200 ft)
3:00 pm PST Dec 7, 2025
3pm 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