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Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

36°F

2°C

Humidity 69%
Wind Speed WNW 4 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 22 Jan 11:53 AM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 22, 12:11pm until January 23, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 22, 12:11pm until January 23, 12:00pm

    NOW until 12:00pm Fri

    Air Stagnation Advisory

  • This Afternoon

    High: 44 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after midnight. Areas of frost before 8pm, then widespread frost after 9pm.  Otherwise, mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Frost then
    Frost and
    Patchy Fog

  • Friday

    Friday: Areas of freezing fog before 7am. Widespread frost, mainly before 10am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 47. Calm wind becoming northeast 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 47 °F

    Frost and
    Areas
    Freezing Fog
    then Sunny

  • Friday Night

    Friday Night: Widespread frost after midnight.  Otherwise, clear, with a low around 25. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 25 °F

    Clear then
    Frost

  • Saturday

    Saturday: Widespread frost before 11am.  Otherwise, sunny, with a high near 47. Calm wind.

    High: 47 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost.  Otherwise, mostly clear, with a low around 25.

    Low: 25 °F

    Frost

  • Sunday

    Sunday: Widespread frost before 11am.  Otherwise, mostly sunny, with a high near 45.

    High: 45 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Widespread frost.  Otherwise, mostly cloudy, with a low around 29.

    Low: 29 °F

    Frost

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 44. Calm wind.
Tonight
Patchy fog after midnight. Areas of frost before 8pm, then widespread frost after 9pm. Otherwise, mostly cloudy, with a low around 29. Calm wind.
Friday
Areas of freezing fog before 7am. Widespread frost, mainly before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 47. Calm wind becoming northeast 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Widespread frost after midnight. Otherwise, clear, with a low around 25. Northeast wind around 6 mph becoming calm in the evening.
Saturday
Widespread frost before 11am. Otherwise, sunny, with a high near 47. Calm wind.
Saturday Night
Widespread frost. Otherwise, mostly clear, with a low around 25.
Sunday
Widespread frost before 11am. Otherwise, mostly sunny, with a high near 45.
Sunday Night
Widespread frost. Otherwise, mostly cloudy, with a low around 29.
Monday
Mostly cloudy, with a high near 45.
Monday Night
Patchy fog between 2am and 3am. Widespread frost, mainly after 3am. Otherwise, mostly cloudy, with a low around 32.
Tuesday
Widespread frost. Otherwise, partly sunny, with a high near 51.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 37.
Wednesday
A chance of rain. Mostly cloudy, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
11:41 am PST Jan 22, 2026
12pm PST Jan 22, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database