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

46°F

8°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 5.00 mi
Last update 09 Dec 01:20 PM PST
Extended Forecast for

Portland International Airport OR

Flood Watch December 9, 01:35pm until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 01:35pm until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • This Afternoon

    High: 57 °F

    Rain

  • Tonight

    Tonight: Rain, mainly after 4am. Low around 51. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain. High near 60. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    High: 60 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain. Low around 54. Breezy, with a south southwest wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 54 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain, mainly before 4pm. High near 58. South southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A slight chance of rain before 10am, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 58. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A slight chance of rain before 10pm. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

This Afternoon
Rain. High near 57. South southeast wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain, mainly after 4am. Low around 51. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 60. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Wednesday Night
Rain. Low around 54. Breezy, with a south southwest wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain, mainly before 4pm. High near 58. South southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 52.
Friday
A slight chance of rain before 10am, then a slight chance of rain after 4pm. Mostly cloudy, with a high near 58. Chance of precipitation is 20%.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 57.
Saturday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 47.
Sunday
Rain likely. Mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Mostly cloudy, with a low around 46.
Monday
Rain. Cloudy, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland International Airport OR
 45.56°N 122.59°W (Elev. 200 ft)
Last Update:
1:01 pm PST Dec 9, 2025
Forecast Valid:
1pm 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