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Hazardous Weather Conditions

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 30.24 in (1024.04 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 21 Jan 02:00 AM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 21, 02:16am until January 23, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 21, 02:16am until January 23, 12:00pm

    NOW until 12:00pm Fri

    Air Stagnation Advisory

  • Overnight

    Low: 26 °F

    Frost

  • Wednesday

    Wednesday: Widespread frost before 11am. Otherwise, sunny, with a high near 48. Calm wind becoming northeast around 5 mph.

    High: 48 °F

    Frost then
    Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 9pm. Otherwise, mostly clear, with a low around 26. Calm wind.

    Low: 26 °F

    Frost

  • Thursday

    Thursday: Widespread frost before 11am. Otherwise, partly sunny, with a high near 45. Calm wind.

    High: 45 °F

    Frost then
    Partly Sunny

  • Thursday Night

    Thursday Night: Widespread frost, mainly after 10pm. Otherwise, partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Frost

  • Friday

    Friday: Widespread frost before 11am. Otherwise, sunny, with a high near 47.

    High: 47 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Widespread frost after midnight. Otherwise, clear, with a low around 26.

    Low: 26 °F

    Clear then
    Frost

  • Saturday

    Saturday: Widespread frost before 10am. Otherwise, sunny, with a high near 46.

    High: 46 °F

    Frost then
    Sunny

Detailed Forecast

Overnight
Widespread frost. Otherwise, partly cloudy, with a low around 26. Light north wind.
Wednesday
Widespread frost before 11am. Otherwise, sunny, with a high near 48. Calm wind becoming northeast around 5 mph.
Wednesday Night
Widespread frost, mainly after 9pm. Otherwise, mostly clear, with a low around 26. Calm wind.
Thursday
Widespread frost before 11am. Otherwise, partly sunny, with a high near 45. Calm wind.
Thursday Night
Widespread frost, mainly after 10pm. Otherwise, partly cloudy, with a low around 27. Calm wind.
Friday
Widespread frost before 11am. Otherwise, sunny, with a high near 47.
Friday Night
Widespread frost after midnight. Otherwise, clear, with a low around 26.
Saturday
Widespread frost before 10am. Otherwise, sunny, with a high near 46.
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 30.
Monday
A slight chance of rain. Partly sunny, with a high near 46.
Monday Night
Areas of frost. Otherwise, mostly cloudy, with a low around 33.
Tuesday
A slight chance of rain. Areas of frost. Otherwise, partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hillsboro OR
 45.53°N 122.92°W (Elev. 200 ft)
Last Update:
1:56 am PST Jan 21, 2026
Forecast Valid:
2am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation