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Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

30°F

-1°C

Humidity 95%
Wind Speed NW 6 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 18 Jan 11:53 PM PST
Extended Forecast for

4 Miles E Farmington OR

Air Stagnation Advisory January 19, 12:11am until January 21, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 12:11am until January 21, 04:00pm

    NOW until 4:00pm Wed

    Air Stagnation Advisory

  • Overnight

    Low: 35 °F

    Areas Frost

  • M.L.King Day

    M.L.King Day: Areas of frost before 9am.  Otherwise, sunny, with a high near 49. East northeast wind around 7 mph.

    High: 49 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Widespread frost, mainly after 4am.  Otherwise, mostly clear, with a low around 32. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 32 °F

    Frost

  • Tuesday

    Tuesday: Widespread frost, mainly before 8am.  Otherwise, sunny, with a high near 50. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 50 °F

    Frost then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Widespread frost, mainly after 5am.  Otherwise, partly cloudy, with a low around 33. Northeast wind 3 to 6 mph.

    Low: 33 °F

    Partly Cloudy
    then Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 8am.  Otherwise, partly sunny, with a high near 47.

    High: 47 °F

    Frost then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly after 3am.  Otherwise, mostly cloudy, with a low around 32.

    Low: 32 °F

    Frost

  • Thursday

    Thursday: Widespread frost, mainly before 10am.  Otherwise, partly sunny, with a high near 45.

    High: 45 °F

    Frost then
    Partly Sunny

Detailed Forecast

Overnight
Areas of frost after 1am. Otherwise, clear, with a low around 35. Northeast wind around 8 mph.
M.L.King Day
Areas of frost before 9am. Otherwise, sunny, with a high near 49. East northeast wind around 7 mph.
Monday Night
Widespread frost, mainly after 4am. Otherwise, mostly clear, with a low around 32. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 50. Calm wind becoming north northeast around 5 mph in the afternoon.
Tuesday Night
Widespread frost, mainly after 5am. Otherwise, partly cloudy, with a low around 33. Northeast wind 3 to 6 mph.
Wednesday
Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 47.
Wednesday Night
Widespread frost, mainly after 3am. Otherwise, mostly cloudy, with a low around 32.
Thursday
Widespread frost, mainly before 10am. Otherwise, partly sunny, with a high near 45.
Thursday Night
A chance of rain after 10pm. Mostly cloudy, with a low around 36.
Friday
A chance of rain before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 46.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 37.
Saturday
A chance of rain and snow. Partly sunny, with a high near 47.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 38.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Farmington OR
 45.45°N 122.87°W (Elev. 600 ft)
11:41 pm PST Jan 18, 2026
12am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database