Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.

Overcast

56°F

13°C

Humidity 96%
Wind Speed S 8 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 09 Dec 10:53 PM PST
Extended Forecast for

2 Miles WSW Hillsboro OR

Wind Advisory until December 10, 10:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 10, 10:00pm

    NOW until 10:00pm Wed

    Wind Advisory

  • Tonight

    Low: 54 °F

    Rain

  • Wednesday

    Wednesday: Rain.  High near 59. South southwest wind 10 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    High: 59 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 53. South southwest wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before 4pm.  High near 58. South southwest wind around 6 mph.  Chance of precipitation is 80%.

    High: 58 °F

    Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain. Steady temperature around 54. South southwest wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Wednesday
Rain. High near 59. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Wednesday Night
Rain. Low around 53. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 4pm. High near 58. South southwest wind around 6 mph. Chance of precipitation is 80%.
Thursday Night
A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 50. Calm wind.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 47.
Saturday
Mostly cloudy, with a high near 55.
Saturday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 45.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 53.
Sunday Night
Rain likely. Mostly cloudy, with a low around 45.
Monday
Rain. Cloudy, with a high near 55.
Monday Night
Rain. Mostly cloudy, with a low around 47.
Tuesday
Rain likely. Mostly cloudy, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Hillsboro OR
 45.52°N 123.01°W (Elev. 118 ft)
10:45 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 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