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Hazardous Weather Conditions
Current conditions at
Portland-Hillsboro Airport (KHIO)
Lat: 45.54765°NLon: 122.95568°WElev: 194.0ft.
Clear
39°F
4°C
| Humidity | 60% |
| Wind Speed | E 3 MPH |
| Barometer | 30.24 in (1024.04 mb) |
| Dewpoint | 26°F (-3°C) |
| Visibility | 10.00 mi |
| Last update | 19 Jan 06:20 PM PST |
Extended Forecast for
Hillsboro OR
Air Stagnation Advisory January 19, 06:41pm until January 21, 04:00pm
NOW until 4:00pm Wed

Air Stagnation Advisory
Tonight

Low: 29 °F
Frost
Tuesday

High: 51 °F
Frost then
SunnyTuesday Night

Low: 30 °F
Frost
Wednesday

High: 48 °F
Frost then
Mostly SunnyWednesday Night

Low: 30 °F
Frost
Thursday

High: 47 °F
Frost then
Mostly SunnyThursday Night

Low: 32 °F
Frost
Friday

High: 49 °F
Frost then
Sunny
Detailed Forecast
Tonight
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 29. Light and variable wind.
Tuesday
Widespread frost, mainly before 10am. Otherwise, sunny, with a high near 51. Calm wind becoming northeast around 6 mph in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Widespread frost, mainly after midnight. Otherwise, partly cloudy, with a low around 30. Calm wind.
Wednesday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 48. Calm wind.
Wednesday Night
Widespread frost, mainly after 11pm. Otherwise, partly cloudy, with a low around 30. Calm wind.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 47.
Thursday Night
Widespread frost, mainly after 1am. Otherwise, partly cloudy, with a low around 32.
Friday
Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 49.
Friday Night
Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 30.
Saturday
A slight chance of rain and snow between 10am and 1pm, then a slight chance of rain after 1pm. Widespread frost before 10am. Snow level 2200 feet rising to 3200 feet in the afternoon. Otherwise, partly sunny, with a high near 47.
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.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38.
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:
Hillsboro OR
45.53°N 122.92°W (Elev. 200 ft)
45.53°N 122.92°W (Elev. 200 ft)
5:41 pm PST Jan 19, 2026
6pm PST Jan 19, 2026-6pm PST Jan 26, 2026



