Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

I84 WB at Cascade Locks MP44.57 (ODT78)

Lat: 45.66931°NLon: 121.88484°WElev: 194.0ft.

NA

47°F

8°C

Humidity 91%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 09 Dec 07:15 PM PST
Extended Forecast for

5 Miles S Cascade Locks OR

Flood Watch December 9, 07:42pm until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 07:42pm until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • Tonight

    Low: 54 °F

    Heavy Rain

  • Wednesday

    Wednesday: Rain.  High near 57. West southwest wind around 10 mph, with gusts as high as 36 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 52. West southwest wind 7 to 9 mph, with gusts as high as 32 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Rain

  • Thursday

    Thursday: Rain.  High near 56. West southwest wind around 6 mph, with gusts as high as 23 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm.  Mostly cloudy, with a low around 50. Calm wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain Likely

  • Friday

    Friday: A 30 percent chance of rain.  Mostly cloudy, with a high near 57.

    High: 57 °F

    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance Rain

  • Saturday

    Saturday: A slight chance of rain.  Mostly sunny, with a high near 58.

    High: 58 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Rain, mainly after 4am. The rain could be heavy at times. Steady temperature around 54. West southwest wind 7 to 10 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
Rain. High near 57. West southwest wind around 10 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain. Low around 52. West southwest wind 7 to 9 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain. High near 56. West southwest wind around 6 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 50. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 57.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 46.
Saturday
A slight chance of rain. Mostly sunny, with a high near 58.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 44.
Sunday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 52.
Sunday Night
Rain likely. Mostly cloudy, with a low around 44.
Monday
Rain. Cloudy, with a high near 55.
Monday Night
Rain. Cloudy, with a low around 44.
Tuesday
Rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Cascade Locks OR
 45.6°N 121.88°W (Elev. 1142 ft)
6:41 pm PST Dec 9, 2025
7pm PST Dec 9, 2025-6pm PST Dec 16, 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