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

I84 WB at Cascade Locks MP44.57 (ODT78)

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

NA

54°F

12°C

Humidity 91%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 08 Dec 10:35 PM PST
Extended Forecast for

3 Miles WNW Cascade Locks OR

Flood Watch December 8, 10:53pm until December 12, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 8, 10:53pm until December 12, 04:00am

    NOW until 4:00am Fri

    Flood Watch

  • Tonight

    Low: 45 °F

    Heavy Rain
    and Very
    Windy

  • Tuesday

    Tuesday: Rain.  High near 53. West southwest wind 9 to 13 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 53 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times.  Temperature rising to around 53 by 10pm. Windy, with a west southwest wind 18 to 28 mph, with gusts as high as 50 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 49 °F

    Heavy Rain
    and Windy

  • Wednesday

    Wednesday: Rain.  High near 54. Very windy, with a west southwest wind 22 to 30 mph, with gusts as high as 55 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 54 °F

    Rain and Very
    Windy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 51. Windy, with a west southwest wind around 22 mph, with gusts as high as 41 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 51 °F

    Rain and
    Windy

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 53. Breezy.  Chance of precipitation is 90%.

    High: 53 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A slight chance of rain.  Partly sunny, with a high near 55.

    High: 55 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Rain. The rain could be heavy at times. Low around 45. Very windy, with a west southwest wind 29 to 31 mph, with gusts as high as 60 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain. High near 53. West southwest wind 9 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Tuesday Night
Rain. The rain could be heavy at times. Temperature rising to around 53 by 10pm. Windy, with a west southwest wind 18 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday
Rain. High near 54. Very windy, with a west southwest wind 22 to 30 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
Rain. Low around 51. Windy, with a west southwest wind around 22 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain, mainly before 4pm. High near 53. Breezy. Chance of precipitation is 90%.
Thursday Night
A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 48.
Friday
A slight chance of rain. Partly sunny, with a high near 55.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 45.
Saturday
A chance of rain after 10am. Partly sunny, with a high near 53.
Saturday Night
Rain likely. Mostly cloudy, with a low around 43.
Sunday
Rain likely. Mostly cloudy, with a high near 48.
Sunday Night
Rain likely. Mostly cloudy, with a low around 42.
Monday
Rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Cascade Locks OR
 45.7°N 121.94°W (Elev. 1257 ft)
10:41 pm PST Dec 8, 2025
10pm PST Dec 8, 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