National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Mist

39°F

4°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.46 in (1031.49 mb)
Dewpoint 39°F (4°C)
Visibility 1.75 mi
Last update 10 Jan 12:00 PM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 10, 12:18pm until January 11, 10:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 10, 12:18pm until January 11, 10:00am

    NOW until 10:00am Sun

    Air Stagnation Advisory

  • This Afternoon

    High: 49 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of rain, mainly between 2am and 4am. Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Chance Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 50. Calm wind.

    High: 50 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Chance Rain

  • Monday

    Monday: A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 52. Calm wind.

    High: 52 °F

    Chance Rain
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog. Otherwise, partly cloudy, with a low around 40.

    Low: 40 °F

    Patchy Fog

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 49. Calm wind becoming southeast around 5 mph.
Tonight
A 30 percent chance of rain, mainly between 2am and 4am. Mostly cloudy, with a low around 39. Calm wind.
Sunday
A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 50. Calm wind.
Sunday Night
A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 39. Calm wind.
Monday
A 30 percent chance of rain before 10am. Mostly cloudy, with a high near 52. Calm wind.
Monday Night
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 40.
Wednesday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 54.
Wednesday Night
Patchy fog before 11pm, then patchy fog after midnight. Otherwise, partly cloudy, with a low around 40.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 37.
Friday
Sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
Last Update:
11:41 am PST Jan 10, 2026
Forecast Valid:
12pm PST Jan 10, 2026-6pm PST Jan 16, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation