Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Portland, Portland International Airport (KPDX)

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

light drizzle

56°F

13°C

Humidity 90%
Wind Speed S 10 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 53°F (12°C)
Visibility 9.00 mi
Last update 08 Dec 07:01 AM PST
Extended Forecast for

Portland International Airport OR

Flood Watch December 8, 10:00am until December 12, 04:00am
Wind Advisory until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Wind Advisory until December 9, 04:00am

    NOW until 4:00am Tue

    Wind Advisory

  • Today

    High: 58 °F

    Rain and
    Windy

  • Tonight

    Tonight: Rain.  Low around 49. Windy, with a south southwest wind 17 to 23 mph, with gusts as high as 41 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 49 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain.  High near 57. North northwest wind 8 to 10 mph becoming south southwest in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 53. Breezy, with a south southwest wind 15 to 18 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 53 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 60. Breezy, with a south southwest wind around 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 60 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance Rain

Detailed Forecast

Today
Rain. High near 58. Windy, with a south southwest wind 14 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Rain. Low around 49. Windy, with a south southwest wind 17 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain. High near 57. North northwest wind 8 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night
Rain. Low around 53. Breezy, with a south southwest wind 15 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday
Rain. High near 60. Breezy, with a south southwest wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain. Low around 54. Chance of precipitation is 90%.
Thursday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Thursday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 49.
Friday
Mostly cloudy, with a high near 57.
Friday Night
A slight chance of rain after 4am. Mostly cloudy, with a low around 45.
Saturday
A chance of rain. Mostly cloudy, with a high near 55.
Saturday Night
Rain likely. Mostly cloudy, with a low around 46.
Sunday
A chance of rain. Mostly cloudy, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Portland International Airport OR
 45.6°N 122.6°W (Elev. 200 ft)
6:41 am PST Dec 8, 2025
7am PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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