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Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

39°F

4°C

Humidity 69%
Wind Speed NW 6 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 20 Jan 11:00 AM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 20, 11:21am until January 21, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 20, 11:21am until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • Today

    High: 50 °F

    Sunny

  • Tonight

    Tonight: Areas of frost before 10pm, then widespread frost after midnight.  Otherwise, partly cloudy, with a low around 30. North northeast wind around 6 mph becoming calm  after midnight.

    Low: 30 °F

    Frost

  • Wednesday

    Wednesday: Widespread frost before 10am.  Otherwise, mostly sunny, with a high near 48. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 48 °F

    Frost then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 10pm.  Otherwise, mostly clear, with a low around 28. Light north wind.

    Low: 28 °F

    Frost

  • Thursday

    Thursday: Widespread frost, mainly before 10am.  Otherwise, mostly sunny, with a high near 46. Calm wind.

    High: 46 °F

    Frost then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 10pm.  Otherwise, partly cloudy, with a low around 31.

    Low: 31 °F

    Frost

  • Friday

    Friday: Widespread frost, mainly before 9am.  Otherwise, mostly sunny, with a high near 47.

    High: 47 °F

    Frost then
    Mostly Sunny

  • Friday Night

    Friday Night: Widespread frost, mainly after midnight.  Otherwise, mostly clear, with a low around 29.

    Low: 29 °F

    Frost

Detailed Forecast

Today
Sunny, with a high near 50. East northeast wind 5 to 7 mph, with gusts as high as 20 mph.
Tonight
Areas of frost before 10pm, then widespread frost after midnight. Otherwise, partly cloudy, with a low around 30. North northeast wind around 6 mph becoming calm after midnight.
Wednesday
Widespread frost before 10am. Otherwise, mostly sunny, with a high near 48. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Widespread frost, mainly after 10pm. Otherwise, mostly clear, with a low around 28. Light north wind.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 46. Calm wind.
Thursday Night
Widespread frost, mainly after 10pm. Otherwise, partly cloudy, with a low around 31.
Friday
Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 47.
Friday Night
Widespread frost, mainly after midnight. Otherwise, mostly clear, with a low around 29.
Saturday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 48.
Saturday Night
A slight chance of rain between 10pm and 1am, then a chance of rain and snow. Areas of frost between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 46.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
10:56 am PST Jan 20, 2026
11am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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