
Want to revisit 2025? Here's our year-end climate summary!
Our annual climate summary for Portland has been posted. Additional summaries for Astoria, Eugene, and Salem are available. For other climate summaries, visit our Observed Weather tab on our climate page. Read More >
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 | 69% |
| Wind Speed | NW 6 MPH |
| Barometer | 30.27 in (1025.06 mb) |
| Dewpoint | 30°F (-1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 35°F (2°C) |
| Last update | 20 Jan 11:00 AM PST |
Extended Forecast for
Hillsboro OR
Air Stagnation Advisory January 20, 11:21am until January 21, 04:00pm
NOW until 4:00pm Wed

Air Stagnation Advisory
Today

High: 50 °F
Sunny
Tonight

Low: 30 °F
Frost
Wednesday

High: 48 °F
Frost then
Mostly SunnyWednesday Night

Low: 28 °F
Frost
Thursday

High: 46 °F
Frost then
Mostly SunnyThursday Night

Low: 31 °F
Frost
Friday

High: 47 °F
Frost then
Mostly SunnyFriday Night

Low: 29 °F
Frost
Detailed Forecast
Today
Sunny, with a high near 50. East northeast wind 5 to 7 mph, with gusts as high as 20 mph.
Tonight
Areas of frost before 10pm, then widespread frost after midnight. Otherwise, partly cloudy, with a low around 30. North northeast wind around 6 mph becoming calm after midnight.
Wednesday
Widespread frost before 10am. Otherwise, mostly sunny, with a high near 48. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Widespread frost, mainly after 10pm. Otherwise, mostly clear, with a low around 28. Light north wind.
Thursday
Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 46. Calm wind.
Thursday Night
Widespread frost, mainly after 10pm. Otherwise, partly cloudy, with a low around 31.
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 48.
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 46.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36.
Monday
A chance of rain. Mostly cloudy, with a high near 52.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
10:56 am PST Jan 20, 2026
11am PST Jan 20, 2026-6pm PST Jan 26, 2026



