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Hazardous Weather Conditions
Current conditions at
Portland-Hillsboro Airport (KHIO)
Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.
Clear
41°F
5°C
| Humidity | 60% |
| Wind Speed | WNW 5 MPH |
| Barometer | 30.26 in (1024.72 mb) |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 20 Jan 11:35 AM PST |
Extended Forecast for
2 Miles WSW Hillsboro OR
Air Stagnation Advisory January 20, 11:55am until January 21, 04:00pm
NOW until 4:00pm Wed

Air Stagnation Advisory
Today

High: 49 °F
Sunny
Tonight

Low: 30 °F
Frost
Wednesday

High: 47 °F
Frost then
Mostly SunnyWednesday Night

Low: 29 °F
Frost
Thursday

High: 45 °F
Frost then
Mostly SunnyThursday Night

Low: 32 °F
Frost
Friday

High: 47 °F
Frost then
Mostly SunnyFriday Night

Low: 29 °F
Frost
Detailed Forecast
Today
Sunny, with a high near 49. East northeast wind 3 to 6 mph.
Tonight
Widespread frost, mainly after 11pm. Otherwise, partly cloudy, with a low around 30. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 47. Light and variable wind.
Wednesday Night
Widespread frost, mainly after 10pm. Otherwise, mostly clear, with a low around 29. Calm wind.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 45. Calm wind.
Thursday Night
Widespread frost, mainly after 10pm. Otherwise, partly cloudy, with a low around 32.
Friday
Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 47.
Friday Night
Widespread frost, mainly after midnight. Otherwise, mostly clear, with a low around 29.
Saturday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 47.
Saturday Night
A slight chance of rain between 10pm and 1am, then a chance of rain and snow. Areas of frost between 9pm and 10pm. Otherwise, mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 45.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 51.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
2 Miles WSW Hillsboro OR
45.52°N 122.98°W (Elev. 161 ft)
45.52°N 122.98°W (Elev. 161 ft)
11:46 am PST Jan 20, 2026
11am PST Jan 20, 2026-6pm PST Jan 26, 2026



