Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Mostly Cloudy

52°F

11°C

Humidity 81%
Wind Speed WSW 4 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 07 Dec 05:35 PM PST
Extended Forecast for

2 Miles WSW Hillsboro OR

Flood Watch December 8, 04:00am until December 12, 04:00am
Wind Advisory December 8, 07:00am until December 9, 04:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  • This Afternoon

    This Afternoon: Showers likely.  Mostly cloudy, with a steady temperature around 54. Southwest wind around 6 mph.  Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers, mainly after 3am.  Low around 48. Light south wind.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers before 10am, then rain, mainly after 10am.  High near 58. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 58 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Rain.  Low around 47. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 47 °F

    Rain and
    Breezy

  • Tuesday

    Tuesday: Rain.  High near 57. Light and variable wind becoming south southwest around 5 mph in the afternoon.  Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain.  Low around 50. Chance of precipitation is 100%.

    Low: 50 °F

    Rain

  • Wednesday

    Wednesday: Rain.  High near 58. Chance of precipitation is 100%.

    High: 58 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain.  Cloudy, with a low around 52.

    Low: 52 °F

    Rain

  • Thursday

    Thursday: Rain likely, mainly before 10am.  Cloudy, with a high near 59.

    High: 59 °F

    Rain Likely

Detailed Forecast

This Afternoon
Showers likely. Mostly cloudy, with a steady temperature around 54. Southwest wind around 6 mph. Chance of precipitation is 60%.
Tonight
Showers, mainly after 3am. Low around 48. Light south wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers before 10am, then rain, mainly after 10am. High near 58. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Rain. Low around 47. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday
Rain. High near 57. Light and variable wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Tuesday Night
Rain. Low around 50. Chance of precipitation is 100%.
Wednesday
Rain. High near 58. Chance of precipitation is 100%.
Wednesday Night
Rain. Cloudy, with a low around 52.
Thursday
Rain likely, mainly before 10am. Cloudy, with a high near 59.
Thursday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 49.
Friday
A slight chance of rain. Mostly cloudy, with a high near 59.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Saturday
A chance of rain. Mostly cloudy, with a high near 55.
Saturday Night
Rain likely. Mostly cloudy, with a low around 45.
Sunday
A chance of rain. Mostly cloudy, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Hillsboro OR
 45.52°N 123.01°W (Elev. 118 ft)
5:41 pm PST Dec 7, 2025
5pm PST Dec 7, 2025-6pm PST Dec 14, 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