National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Airport (KPDX)

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

light rain,mist

47°F

8°C

Humidity 92%
Wind Speed NW 4 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 45°F (7°C)
Visibility 3.00 mi
Wind Chill45°F (7°C)
Last update 09 Dec 09:53 AM PST
Extended Forecast for

Portland OR

Flood Watch December 9, 10:04am until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 10:04am until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • Today

    High: 56 °F

    Rain

  • Tonight

    Tonight: Rain. Temperature rising to around 56 by 10pm. Windy, with a south southwest wind 20 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F⇑

    Rain and
    Windy

  • Wednesday

    Wednesday: Rain. High near 57. Breezy, with a south southwest wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain. Low around 53. Breezy, with a south southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain, mainly before 4pm. High near 56. South southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 56 °F

    Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain. High near 56. Northeast wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain. Temperature rising to around 56 by 10pm. Windy, with a south southwest wind 20 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. High near 57. Breezy, with a south southwest wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 53. Breezy, with a south southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 4pm. High near 56. South southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of rain before 10pm. Mostly cloudy, with a low around 50.
Friday
Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
A chance of rain, mainly after 4pm. Mostly cloudy, with a high near 53.
Saturday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48.
Monday
Rain. Cloudy, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland OR
 45.5°N 122.69°W (Elev. 522 ft)
Last Update:
9:45 am PST Dec 9, 2025
Forecast Valid:
10am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
Forecast Discussion
 
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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