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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 60%
Wind Speed E 3 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 19 Jan 06:20 PM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 19, 06:41pm until January 21, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 06:41pm until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • Tonight

    Low: 29 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost, mainly before 10am.  Otherwise, sunny, with a high near 51. Calm wind becoming northeast around 6 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 51 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread frost, mainly after midnight.  Otherwise, partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 10am.  Otherwise, mostly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Frost then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 11pm.  Otherwise, partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Frost

  • Thursday

    Thursday: Widespread frost, mainly before 10am.  Otherwise, mostly sunny, with a high near 47.

    High: 47 °F

    Frost then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 1am.  Otherwise, partly cloudy, with a low around 32.

    Low: 32 °F

    Frost

  • Friday

    Friday: Widespread frost, mainly before 9am.  Otherwise, mostly sunny, with a high near 49.

    High: 49 °F

    Frost then
    Sunny

Detailed Forecast

Tonight
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 29. Light and variable wind.
Tuesday
Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 51. Calm wind becoming northeast around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Widespread frost, mainly after midnight. Otherwise, partly cloudy, with a low around 30. Calm wind.
Wednesday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 48. Calm wind.
Wednesday Night
Widespread frost, mainly after 11pm. Otherwise, partly cloudy, with a low around 30. Calm wind.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 47.
Thursday Night
Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 32.
Friday
Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 49.
Friday Night
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 30.
Saturday
A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Widespread frost before 10am. Snow level 2200 feet rising to 3200 feet in the afternoon. Otherwise, partly sunny, with a high near 47.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 34.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 49.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38.
Monday
A chance of rain. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
5:41 pm PST Jan 19, 2026
6pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database