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.

Mostly Cloudy

43°F

6°C

Humidity 81%
Wind Speed ESE 3 MPH
Barometer 30.42 in (1030.14 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 12 Jan 06:35 AM PST
Extended Forecast for

2 Miles NNE Lake Oswego OR

Air Stagnation Advisory January 12, 06:48am until January 16, 04:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 12, 06:48am until January 16, 04:00am

    NOW until 4:00am Fri

    Air Stagnation Advisory

  • Today

    High: 54 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Calm wind.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Patchy dense fog before 11am. Otherwise, partly sunny, with a high near 51. Calm wind.

    High: 51 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy dense fog between 10pm and 11pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Dense
    Fog then
    Mostly 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
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 39.

    Low: 39 °F

    Patchy Fog

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 56.

    High: 56 °F

    Becoming
    Sunny

  • Thursday Night

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

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Today
Mostly sunny, with a high near 54. Calm wind.
Tonight
Increasing clouds, with a low around 39. Calm wind.
Tuesday
Patchy dense fog before 11am. Otherwise, partly sunny, with a high near 51. Calm wind.
Tuesday Night
Patchy dense fog between 10pm and 11pm. Otherwise, mostly 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 fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 39.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 56.
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 54.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 52.
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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:
6:41 am PST Jan 12, 2026
Forecast Valid:
6am PST Jan 12, 2026-6pm PST Jan 18, 2026
 
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Additional Resources

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Chance of Precipitation