Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Portland, Portland International Airport (KPDX)

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

rain,mist

51°F

11°C

Humidity 89%
Wind Speed NNW 10 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 48°F (9°C)
Visibility 6.00 mi
Last update 09 Dec 02:53 AM PST
Extended Forecast for

Portland International Airport OR

Flood Watch December 9, 03:12am until December 12, 04:00am
Wind Advisory December 9, 03:12am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 9, 03:12am until December 12, 04:00am
    Wind Advisory December 9, 03:12am until December 9, 04:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 50 °F

    Rain

  • Tuesday

    Tuesday: Rain.  High near 58. North northeast wind 6 to 10 mph becoming south in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Steady temperature around 56. Breezy, with a south southwest wind 15 to 17 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: 56 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 60. 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.

    High: 60 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 55. South southwest wind around 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain before 10pm, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 51. Chance of precipitation is 40%.

    Low: 51 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A slight chance of rain before 10am.  Mostly cloudy, with a high near 59.

    High: 59 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Overnight
Rain. Low around 50. West southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 58. North northeast wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain. Steady temperature around 56. Breezy, with a south southwest wind 15 to 17 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 60. 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.
Wednesday Night
Rain. Low around 55. South southwest wind around 14 mph, with gusts as high as 26 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 59. Chance of precipitation is 80%.
Thursday Night
A chance of rain before 10pm, then a slight chance of rain after 4am. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Friday
A slight chance of rain before 10am. Mostly cloudy, with a high near 59.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
A chance of rain, mainly after 4pm. Mostly cloudy, with a high near 56.
Saturday Night
Rain likely. Mostly cloudy, with a low around 48.
Sunday
Rain likely. Mostly cloudy, with a high near 56.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48.
Monday
Rain. Cloudy, with a high near 57.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Portland International Airport OR
 45.58°N 122.59°W (Elev. 200 ft)
2:46 am PST Dec 9, 2025
3am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database