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Hazardous Weather Conditions

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

28°F

-2°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Jan 12:20 AM PST
Extended Forecast for

Cedar Hills OR

Air Stagnation Advisory until January 20, 10:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory until January 20, 10:00am

    NOW until 10:00am Tue

    Air Stagnation Advisory

  • Overnight

    Low: 35 °F

    Areas Frost

  • Sunday

    Sunday: Areas of frost before 9am. Otherwise, sunny, with a high near 51. East northeast wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 51 °F

    Areas Frost
    then Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 4am. Otherwise, clear, with a low around 35. East northeast wind around 11 mph, with gusts as high as 21 mph.

    Low: 35 °F

    Clear then
    Areas Frost

  • M.L.King Day

    M.L.King Day: Areas of frost before 8am. Otherwise, sunny, with a high near 51. East northeast wind 11 to 13 mph, with gusts as high as 24 mph.

    High: 51 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. Light northeast wind.

    Low: 32 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 51.

    High: 51 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread frost, mainly between 11pm and 5am. Otherwise, partly cloudy, with a low around 34.

    Low: 34 °F

    Frost

  • Wednesday

    Wednesday: Areas of frost before 9am. Otherwise, partly sunny, with a high near 49.

    High: 49 °F

    Areas Frost
    then Partly
    Sunny

Detailed Forecast

Overnight
Areas of frost after 2am. Otherwise, clear, with a low around 35. East northeast wind around 7 mph.
Sunday
Areas of frost before 9am. Otherwise, sunny, with a high near 51. East northeast wind 5 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Areas of frost after 4am. Otherwise, clear, with a low around 35. East northeast wind around 11 mph, with gusts as high as 21 mph.
M.L.King Day
Areas of frost before 8am. Otherwise, sunny, with a high near 51. East northeast wind 11 to 13 mph, with gusts as high as 24 mph.
Monday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 32. Light northeast wind.
Tuesday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 51.
Tuesday Night
Widespread frost, mainly between 11pm and 5am. Otherwise, partly cloudy, with a low around 34.
Wednesday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 49.
Wednesday Night
Areas of frost after midnight. Otherwise, mostly cloudy, with a low around 34.
Thursday
A slight chance of rain after 10am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 48.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 38.
Friday
A chance of rain. Mostly cloudy, with a high near 49.
Friday Night
A chance of rain. Mostly cloudy, with a low around 39.
Saturday
A chance of rain. Mostly cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cedar Hills OR
 45.49°N 122.78°W (Elev. 364 ft)
Last Update:
12:07 am PST Jan 18, 2026
Forecast Valid:
12am PST Jan 18, 2026-6pm PST Jan 24, 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