Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

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

Mostly Cloudy

59°F

15°C

Humidity 72%
Wind Speed SW 11 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 07 Dec 02:53 PM PST
Extended Forecast for

5 Miles SE Troutdale OR

Flood Watch December 8, 04:00am until December 12, 04:00am
Wind Advisory December 8, 07:00am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  • This Afternoon

    This Afternoon: Rain, mainly after 4pm.  High near 53. Southwest wind around 14 mph, with gusts as high as 23 mph.  Chance of precipitation is 80%.

    High: 53 °F

    Rain

  • Tonight

    Tonight: Rain likely, mainly after 10pm.  Mostly cloudy, with a low around 49. South wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance Rain
    then Rain
    Likely

  • Monday

    Monday: Rain.  High near 54. Breezy, with a south southwest wind 18 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 54 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: Rain.  Low around 47. Windy, with a south southwest wind 22 to 24 mph, with gusts as high as 39 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 47 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain.  High near 54. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 54 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 51. Windy.  Chance of precipitation is 100%.

    Low: 51 °F

    Rain and
    Windy

  • Wednesday

    Wednesday: Rain.  High near 55. Breezy.  Chance of precipitation is 100%.

    High: 55 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 52.

    Low: 52 °F

    Rain

  • Thursday

    Thursday: Rain.  Cloudy, with a high near 56.

    High: 56 °F

    Rain

Detailed Forecast

This Afternoon
Rain, mainly after 4pm. High near 53. Southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Tonight
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 49. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. High near 54. Breezy, with a south southwest wind 18 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 47. Windy, with a south southwest wind 22 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain. High near 54. South southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night
Rain. Low around 51. Windy. Chance of precipitation is 100%.
Wednesday
Rain. High near 55. Breezy. Chance of precipitation is 100%.
Wednesday Night
Rain. Cloudy, with a low around 52.
Thursday
Rain. Cloudy, with a high near 56.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 50.
Friday
A chance of rain. Partly sunny, with a high near 56.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Saturday
A chance of rain. Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Troutdale OR
 45.49°N 122.32°W (Elev. 600 ft)
2:45 pm PST Dec 7, 2025
3pm PST Dec 7, 2025-6pm PST Dec 13, 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