Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

Portland, Portland-Troutdale Airport (KTTD)

Lat: 45.55111°NLon: 122.40889°WElev: 36.0ft.

Overcast

57°F

14°C

Humidity 82%
Wind Speed SW 9 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 11 Dec 08:30 AM PST
Extended Forecast for

4 Miles NNE Happy Valley OR

  • Today

    Today: Showers likely, mainly before noon.  Mostly cloudy, with a high near 58. Southwest wind 7 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 50. Light and variable wind.

    Low: 50 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Friday

    Friday: Patchy fog before noon.  Otherwise, mostly cloudy, with a high near 57. Calm wind.

    High: 57 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Patchy fog before 2am.  Otherwise, mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Saturday

    Saturday: Mostly sunny, with a high near 56. Calm wind.

    High: 56 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am.  Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Slight Chance
    Rain then
    Rain Likely

  • Sunday

    Sunday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain, mainly after 4am.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Rain

  • Monday

    Monday: Rain.  Cloudy, with a high near 57.

    High: 57 °F

    Rain

Detailed Forecast

Today
Showers likely, mainly before noon. Mostly cloudy, with a high near 58. Southwest wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Tonight
A 20 percent chance of showers before 10pm. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 50. Light and variable wind.
Friday
Patchy fog before noon. Otherwise, mostly cloudy, with a high near 57. Calm wind.
Friday Night
Patchy fog before 2am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Saturday
Mostly sunny, with a high near 56. Calm wind.
Saturday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Sunday Night
Rain, mainly after 4am. Mostly cloudy, with a low around 49.
Monday
Rain. Cloudy, with a high near 57.
Monday Night
Rain. Cloudy, with a low around 47. Breezy.
Tuesday
Rain. Cloudy, with a high near 53. Breezy.
Tuesday Night
Rain. Cloudy, with a low around 43.
Wednesday
Rain. Cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Happy Valley OR
 45.51°N 122.51°W (Elev. 325 ft)
8:41 am PST Dec 11, 2025
8am PST Dec 11, 2025-6pm PST Dec 17, 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