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Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

27°F

-3°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 21 Jan 12:20 AM PST
Extended Forecast for

Cedar Hills OR

Air Stagnation Advisory January 21, 12:31am until January 23, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 21, 12:31am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Air Stagnation Advisory

  • Overnight

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Widespread frost before 9am.  Otherwise, mostly sunny, with a high near 49. East northeast wind 7 to 9 mph, with gusts as high as 22 mph.

    High: 49 °F

    Frost then
    Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 11pm.  Otherwise, mostly clear, with a low around 29. East northeast wind around 7 mph.

    Low: 29 °F

    Frost

  • Thursday

    Thursday: Widespread frost, mainly before 10am.  Otherwise, mostly sunny, with a high near 46. Northeast wind 5 to 7 mph.

    High: 46 °F

    Frost then
    Mostly 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 9am.  Otherwise, sunny, with a high near 48.

    High: 48 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Widespread frost after 1am.  Otherwise, clear, with a low around 28.

    Low: 28 °F

    Clear then
    Frost

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 30. East northeast wind around 8 mph, with gusts as high as 20 mph.
Wednesday
Widespread frost before 9am. Otherwise, mostly sunny, with a high near 49. East northeast wind 7 to 9 mph, with gusts as high as 22 mph.
Wednesday Night
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 29. East northeast wind around 7 mph.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 46. Northeast wind 5 to 7 mph.
Thursday Night
Widespread frost, mainly after 11pm. Otherwise, partly cloudy, with a low around 29. Calm wind.
Friday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 48.
Friday Night
Widespread frost after 1am. Otherwise, clear, with a low around 28.
Saturday
Sunny, with a high near 47.
Saturday Night
Widespread frost after midnight. Otherwise, partly cloudy, with a low around 29.
Sunday
Widespread frost before 10am. Otherwise, mostly sunny, with a high near 45.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 35.
Monday
A chance of rain. Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
A slight chance of rain. Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Cedar Hills OR
 45.49°N 122.78°W (Elev. 364 ft)
11:41 pm PST Jan 20, 2026
12am 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