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Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

25°F

-4°C

Humidity 100%
Wind Speed W 3 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 21 Jan 06:00 AM PST
Extended Forecast for

Cedar Hills OR

Air Stagnation Advisory January 21, 06:25am until January 23, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 21, 06:25am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Air Stagnation Advisory

  • Today

    High: 47 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after 11pm.  Otherwise, mostly clear, with a low around 29. North northeast wind 3 to 6 mph.

    Low: 29 °F

    Frost

  • Thursday

    Thursday: Widespread frost before 10am.  Otherwise, mostly sunny, with a high near 46. Northeast wind 3 to 5 mph.

    High: 46 °F

    Frost then
    Partly Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 11pm.  Otherwise, partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Frost

  • Friday

    Friday: Widespread frost, mainly before 10am.  Otherwise, sunny, with a high near 47. Calm wind becoming northeast around 6 mph in the morning.

    High: 47 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Widespread frost before 3am, then widespread frost after 5am.  Otherwise, clear, with a low around 28.

    Low: 28 °F

    Clear then
    Frost

  • Saturday

    Saturday: Widespread frost before 8am.  Otherwise, sunny, with a high near 46.

    High: 46 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost after 10pm.  Otherwise, mostly clear, with a low around 28.

    Low: 28 °F

    Frost

Detailed Forecast

Today
Widespread frost before 7am. Otherwise, sunny, with a high near 47. East northeast wind 7 to 10 mph, with gusts as high as 22 mph.
Tonight
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 29. North northeast wind 3 to 6 mph.
Thursday
Widespread frost before 10am. Otherwise, mostly sunny, with a high near 46. Northeast wind 3 to 5 mph.
Thursday Night
Widespread frost, mainly after 11pm. Otherwise, partly cloudy, with a low around 29. Calm wind.
Friday
Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 47. Calm wind becoming northeast around 6 mph in the morning.
Friday Night
Widespread frost before 3am, then widespread frost after 5am. Otherwise, clear, with a low around 28.
Saturday
Widespread frost before 8am. Otherwise, sunny, with a high near 46.
Saturday Night
Widespread frost after 10pm. Otherwise, mostly clear, with a low around 28.
Sunday
Widespread frost before 11am. Otherwise, mostly sunny, with a high near 45.
Sunday Night
Widespread frost, mainly after 3am. Otherwise, mostly cloudy, with a low around 32.
Monday
A slight chance of rain. Partly sunny, with a high near 47.
Monday Night
Areas of frost. Otherwise, mostly cloudy, with a low around 34.
Tuesday
A slight chance of rain. Areas of frost. Otherwise, partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Cedar Hills OR
 45.49°N 122.78°W (Elev. 364 ft)
5:41 am PST Jan 21, 2026
6am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database