National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Airport (KPDX)

Lat: 45.59578°NLon: 122.60917°WElev: 20.0ft.

Clear

54°F

12°C

Humidity 58%
Wind Speed WNW 5 MPH
Barometer 30.38 in (1028.79 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 12 Jan 04:00 PM PST
Extended Forecast for

2 Miles NNE Lake Oswego OR

Air Stagnation Advisory January 12, 04:19pm until January 16, 04:00am
Dense Fog Advisory January 12, 10:00pm until January 13, 11:00am
Click here for hazard details and duration
Air Stagnation Advisory
Dense Fog Advisory
  •  
    Air Stagnation Advisory January 12, 04:19pm until January 16, 04:00am

    NOW until 4:00am Fri

    Air Stagnation Advisory

  • Tonight

    Low: 38 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Patchy dense fog between 9am and 10am. Otherwise, partly sunny, with a high near 52. Calm wind.

    High: 52 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Patchy dense fog before noon. Otherwise, partly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy dense fog before 2am, then patchy dense fog after 3am. Otherwise, mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Patchy dense fog before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 55.

    High: 55 °F

    Patchy Dense
    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

Tonight
Increasing clouds, with a low around 38. Calm wind.
Tuesday
Patchy dense fog between 9am and 10am. Otherwise, partly sunny, with a high near 52. Calm wind.
Tuesday Night
Partly cloudy, with a low around 38. Calm wind.
Wednesday
Patchy dense fog before noon. Otherwise, partly sunny, with a high near 50. Calm wind.
Wednesday Night
Patchy dense fog before 2am, then patchy dense fog after 3am. Otherwise, mostly cloudy, with a low around 39. Calm wind.
Thursday
Patchy dense fog before 7am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 55.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 35.
M.L.King Day
Mostly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Lake Oswego OR
 45.44°N 122.68°W (Elev. 200 ft)
Last Update:
3:45 pm PST Jan 12, 2026
Forecast Valid:
4pm PST Jan 12, 2026-6pm PST Jan 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation