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-Hillsboro Airport (KHIO)

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

Overcast

55°F

13°C

Humidity 93%
Wind Speed S 12 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Dec 04:20 AM PST
Extended Forecast for

Hillsboro OR

  • Overnight

    Overnight: Showers.  Low around 52. South wind around 9 mph.  Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Thursday

    Thursday: Showers, mainly before 11am.  High near 59. South wind around 7 mph.  Chance of precipitation is 80%.

    High: 59 °F

    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 10 percent chance of showers before 8pm.  Patchy fog.  Otherwise, mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Areas
    Fog

  • Friday

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

    High: 57 °F

    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Patchy fog.  Otherwise, mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 55.

    High: 55 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am.  Increasing clouds, with a low around 41. Chance of precipitation is 60%.

    Low: 41 °F

    Chance Rain
    then Rain
    Likely

  • Sunday

    Sunday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 54.

    High: 54 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain.  Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Overnight
Showers. Low around 52. South wind around 9 mph. Chance of precipitation is 80%.
Thursday
Showers, mainly before 11am. High near 59. South wind around 7 mph. Chance of precipitation is 80%.
Thursday Night
A 10 percent chance of showers before 8pm. Patchy fog. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Friday
Areas of fog before noon. Otherwise, mostly cloudy, with a high near 57. Calm wind.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 55.
Saturday Night
Rain likely, mainly after 4am. Increasing clouds, with a low around 41. Chance of precipitation is 60%.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 54.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 47.
Monday
Rain. Cloudy, with a high near 57.
Monday Night
Rain. Cloudy, with a low around 45.
Tuesday
Rain. Cloudy, with a high near 53.
Tuesday Night
Rain. Cloudy, with a low around 42.
Wednesday
Rain. Cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.55°N 122.96°W (Elev. 194 ft)
3:45 am PST Dec 11, 2025
4am 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