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 >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

Lat: 45.55111°NLon: 122.40889°WElev: 36.0ft.

light rain,mist

48°F

9°C

Humidity 93%
Wind Speed E 3 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 46°F (8°C)
Visibility 5.00 mi
Last update 09 Dec 02:10 PM PST
Extended Forecast for

3 Miles NNE Troutdale OR

Flood Watch December 9, 02:37pm until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 02:37pm until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • This Afternoon

    High: 54 °F

    Rain

  • Tonight

    Tonight: Rain, mainly after 4am.  Steady temperature around 55. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 37 mph.  Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 55 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain.  High near 60. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 36 mph.  Chance of precipitation is 80%.

    High: 60 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 53. Breezy, with a south southwest wind around 16 mph, with gusts as high as 32 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 53 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain.  High near 58. Southwest wind 9 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. 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.  Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain.  Mostly cloudy, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A slight chance of rain before 10pm.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

This Afternoon
Rain. Steady temperature around 54. Southeast wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly after 4am. Steady temperature around 55. Breezy, with a southwest wind 16 to 20 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Rain. High near 60. Breezy, with a southwest wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 80%.
Wednesday Night
Rain. Low around 53. Breezy, with a south southwest wind around 16 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. High near 58. Southwest wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 52.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 58.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 58.
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 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Troutdale OR
 45.59°N 122.38°W (Elev. 102 ft)
2:21 pm PST Dec 9, 2025
2pm PST Dec 9, 2025-6pm PST Dec 15, 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