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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

Air Stagnation Advisory until January 21, 04:00 PM PST

Current conditions at

Portland-Hillsboro Airport (KHIO)

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

Clear

25°F

-4°C

Humidity	92%
Wind Speed	N 0 MPH
Barometer	30.23 in (1023.71 mb)
Dewpoint	23°F (-5°C)
Visibility	10.00 mi
Last update	20 Jan 07:00 AM PST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SSW Cedar Hills OR

Air Stagnation Advisory January 20, 07:19am until January 21, 04:00pm

Click here for hazard details and duration

Air Stagnation Advisory

Air Stagnation Advisory January 20, 07:19am until January 21, 04:00pm
NOW until 4:00pm Wed
Air Stagnation Advisory
Today
High: 49 °F
Frost then
Sunny
Tonight
Low: 31 °F
Partly Cloudy
Wednesday
High: 48 °F
Mostly Sunny
Wednesday Night
Low: 30 °F
Frost
Thursday
High: 46 °F
Frost then
Mostly Sunny
Thursday Night
Low: 33 °F
Frost
Friday
High: 47 °F
Frost then
Sunny
Friday Night
Low: 31 °F
Frost

Detailed Forecast

Today

Widespread frost before 8am. Otherwise, mostly sunny, with a high near 49. Light north northeast wind becoming east northeast 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

Tonight

Partly cloudy, with a low around 31. North northeast wind 5 to 7 mph.

Wednesday

Mostly sunny, with a high near 48. East northeast wind 5 to 8 mph.

Wednesday Night

Widespread frost, mainly after 11pm. Otherwise, mostly clear, with a low around 30. Northeast wind 5 to 7 mph.

Thursday

Widespread frost, mainly before 10am. Otherwise, mostly sunny, with a high near 46. Calm wind.

Thursday Night

Widespread frost, mainly after midnight. Otherwise, partly cloudy, with a low around 33.

Friday

Widespread frost, mainly before 9am. Otherwise, mostly sunny, with a high near 47.

Friday Night

Widespread frost, mainly after 1am. Otherwise, mostly clear, with a low around 31.

Saturday

Widespread frost, mainly before 9am. 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 33.

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 38.

Monday

A chance of rain. Mostly cloudy, with a high near 52.