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

DEE FLAT (DEFO)

Lat: 45.58639°NLon: 121.64056°WElev: 1260.0ft.

NA

54°F

12°C

Humidity 84%
Wind Speed SSW 6 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 09 Dec 03:00 AM PST
Extended Forecast for

7 Miles ESE Cascade Locks OR

Flood Watch December 9, 03:47am until December 12, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 03:47am until December 12, 04:00am

    NOW until 4:00am Fri

    Flood Watch

  • Overnight

    Low: 41 °F

    Heavy Rain
    and Windy

  • Tuesday

    Tuesday: Rain. The rain could be heavy at times.  High near 48. West wind 7 to 11 mph, with gusts as high as 23 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 48 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times.  Temperature rising to around 50 by 11pm. Very windy, with a west southwest wind 18 to 23 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 55 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 44 °F

    Heavy Rain
    and Very
    Windy

  • Wednesday

    Wednesday: Rain.  High near 50. Windy, with a west wind 21 to 28 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: 50 °F

    Rain and
    Windy

  • Wednesday Night

    Wednesday Night: Rain.  Low around 46. Windy, with a west southwest wind around 24 mph, with gusts as high as 46 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Rain and
    Windy

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 48. Breezy.  Chance of precipitation is 80%.

    High: 48 °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 slight chance of rain.  Partly sunny, with a high near 48.

    High: 48 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Rain. The rain could be heavy at times. Low around 41. Windy, with a west wind around 24 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. The rain could be heavy at times. High near 48. West wind 7 to 11 mph, with gusts as high as 23 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 50 by 11pm. Very windy, with a west southwest wind 18 to 23 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
Rain. High near 50. Windy, with a west wind 21 to 28 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 46. Windy, with a west southwest wind around 24 mph, with gusts as high as 46 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 48. 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 slight chance of rain. Partly sunny, with a high near 48.
Friday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 41.
Saturday
A chance of rain, mainly after 4pm. Partly sunny, with a high near 48.
Saturday Night
Rain likely. Mostly cloudy, with a low around 41.
Sunday
Rain likely. Snow level 5300 feet. Mostly cloudy, with a high near 41.
Sunday Night
Rain likely. Mostly cloudy, with a low around 41.
Monday
Rain. Mostly cloudy, with a high near 45.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ESE Cascade Locks OR
 45.66°N 121.75°W (Elev. 3291 ft)
3:41 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