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

51°F

11°C

Humidity 91%
Wind Speed S 5 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 09 Dec 04:05 AM PST
Extended Forecast for

5 Miles WSW Cascade Locks OR

Flood Watch December 9, 04:25am until December 11, 04:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 04:25am until December 11, 04:00pm

    NOW until 4:00pm Thu

    Flood Watch

  • Overnight

    Low: 53 °F

    Rain

  • Tuesday

    Tuesday: Rain.  High near 58. Southwest wind 8 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 24 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times.  Low around 52. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 49 mph.  Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 52 °F

    Heavy Rain
    and Breezy

  • Wednesday

    Wednesday: Rain.  High near 60. Windy, with a west southwest wind 23 to 25 mph, with gusts as high as 50 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 60 °F

    Rain and
    Windy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 55. Breezy, with a west southwest wind 15 to 18 mph, with gusts as high as 40 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Rain and
    Breezy

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 59. Breezy.  Chance of precipitation is 90%.

    High: 59 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly after 4am.  Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

  • Friday

    Friday: A chance of rain, mainly before 10am.  Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance Rain

Detailed Forecast

Overnight
Rain. Steady temperature around 53. Southwest wind around 14 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain. High near 58. Southwest wind 8 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 24 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. Low around 52. Breezy, with a west southwest wind 17 to 21 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday
Rain. High near 60. Windy, with a west southwest wind 23 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain. Low around 55. Breezy, with a west southwest wind 15 to 18 mph, with gusts as high as 40 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 59. Breezy. Chance of precipitation is 90%.
Thursday Night
A 50 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 54.
Friday
A chance of rain, mainly before 10am. Mostly cloudy, with a high near 60.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 49.
Saturday
A chance of rain, mainly after 4pm. Partly sunny, with a high near 60.
Saturday Night
Rain likely. Mostly cloudy, with a low around 49.
Sunday
Rain likely. Mostly cloudy, with a high near 54.
Sunday Night
Rain likely. Mostly cloudy, with a low around 48.
Monday
Rain. Cloudy, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Cascade Locks OR
 45.65°N 121.96°W (Elev. 115 ft)
3:55 am PST Dec 9, 2025
4am 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