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 S 4 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 09 Dec 03:15 AM PST
Extended Forecast for

6 Miles SE Cascade Locks OR

Flood Watch December 9, 03:32am until December 12, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 03:32am until December 12, 04:00am

    NOW until 4:00am Fri

    Flood Watch

  • Overnight

    Low: 42 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: Rain.  High near 47. West southwest wind 7 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 47 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times.  Temperature rising to around 48 by 11pm. Windy, with a west southwest wind 18 to 26 mph, with gusts as high as 50 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 44 °F

    Heavy Rain
    and Windy

  • Wednesday

    Wednesday: Rain.  High near 48. Windy, with a west southwest wind 21 to 24 mph, with gusts as high as 48 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 48 °F

    Rain and
    Windy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 44. Windy, with a west southwest wind around 22 mph, with gusts as high as 43 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Rain and
    Windy

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 45. Breezy.  Chance of precipitation is 80%.

    High: 45 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain
    then Slight
    Chance Rain

  • Friday

    Friday: A chance of rain, mainly between 10am and 4pm.  Partly sunny, with a high near 47.

    High: 47 °F

    Chance Rain

Detailed Forecast

Overnight
Rain. The rain could be heavy at times. Steady temperature around 42. Windy, with a west wind around 22 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 47. West southwest wind 7 to 10 mph, with gusts as high as 21 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 48 by 11pm. Windy, with a west southwest wind 18 to 26 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 48. Windy, with a west southwest wind 21 to 24 mph, with gusts as high as 48 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain. Low around 44. Windy, with a west southwest wind around 22 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain, mainly before 4pm. High near 45. Breezy. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 45.
Friday
A chance of rain, mainly between 10am and 4pm. Partly sunny, with a high near 47.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 39.
Saturday
A chance of rain, mainly after 4pm. Partly sunny, with a high near 47.
Saturday Night
Rain likely. Mostly cloudy, with a low around 39.
Sunday
Rain likely. Snow level 5300 feet. Mostly cloudy, with a high near 40.
Sunday Night
Rain likely. Snow level 5700 feet. Mostly cloudy, with a low around 39.
Monday
Rain. Cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Cascade Locks OR
 45.61°N 121.79°W (Elev. 3763 ft)
3:10 am PST Dec 9, 2025
3am 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