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Hazardous Weather Conditions

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

36°F

2°C

Humidity 80%
Wind Speed WNW 5 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 19 Jan 09:55 AM PST
Extended Forecast for

Hillsboro OR

Air Stagnation Advisory January 19, 10:16am until January 21, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 10:16am until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • M.L.King Day

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after midnight. Otherwise, mostly clear, with a low around 31. Light and variable wind.

    Low: 31 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost before 10am. Otherwise, mostly sunny, with a high near 51. Calm wind.

    High: 51 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 9am. Otherwise, partly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Frost then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am. Widespread frost before 1am, then widespread frost after 4am. Otherwise, mostly cloudy, with a low around 30.

    Low: 30 °F

    Frost then
    Frost and
    Patchy Fog

  • Thursday

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

    High: 46 °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

Detailed Forecast

M.L.King Day
Sunny, with a high near 51. Northeast wind 3 to 7 mph. Winds could gust as high as 20 mph.
Tonight
Widespread frost, mainly after midnight. Otherwise, mostly clear, with a low around 31. Light and variable wind.
Tuesday
Widespread frost before 10am. Otherwise, mostly sunny, with a high near 51. Calm wind.
Tuesday Night
Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 30. Calm wind.
Wednesday
Widespread frost, mainly before 9am. Otherwise, partly sunny, with a high near 48. Calm wind.
Wednesday Night
Patchy fog after 2am. Widespread frost before 1am, then widespread frost after 4am. Otherwise, mostly cloudy, with a low around 30.
Thursday
Widespread frost, mainly before 10am. Otherwise, partly sunny, with a high near 46.
Thursday Night
Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 32.
Friday
Areas of frost before 10am. Otherwise, mostly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 33.
Saturday
A slight chance of rain and snow. Partly sunny, with a high near 48.
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.
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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:
9:46 am PST Jan 19, 2026
Forecast Valid:
10am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation