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.

Partly Cloudy

54°F

12°C

Humidity 76%
Wind Speed SW 6 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 07 Dec 06:55 PM PST
Extended Forecast for

Portland International Airport 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
  • Tonight

    Tonight: Showers likely, mainly after 3am.  Mostly cloudy, with a low around 50. South wind around 6 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Showers
    Likely

  • Monday

    Monday: Showers before 10am, then rain, mainly after 10am.  High near 58. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 31 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 48. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 48 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain.  High near 57. East northeast wind 6 to 8 mph becoming south 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, with a south southwest wind 14 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 51 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 59. Chance of precipitation is 100%.

    High: 59 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Rain

  • Thursday

    Thursday: Rain.  Cloudy, with a high near 59.

    High: 59 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance Rain

Detailed Forecast

Tonight
Showers likely, mainly after 3am. Mostly cloudy, with a low around 50. South wind around 6 mph. Chance of precipitation is 60%. 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 13 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 48. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain. High near 57. East northeast wind 6 to 8 mph becoming south 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, with a south southwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday
Rain. High near 59. Chance of precipitation is 100%.
Wednesday Night
Rain. Low around 53. Chance of precipitation is 90%.
Thursday
Rain. Cloudy, with a high near 59.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 51.
Friday
A slight chance of rain before 4pm. 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.
Saturday Night
Rain likely. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Portland International Airport OR
 45.58°N 122.59°W (Elev. 200 ft)
6:41 pm PST Dec 7, 2025
7pm PST Dec 7, 2025-6pm PST Dec 14, 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