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-Hillsboro Airport (KHIO)

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

Overcast

45°F

7°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.41 in (1029.8 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 12 Jan 08:20 AM PST
Extended Forecast for

North Plains OR

Air Stagnation Advisory January 12, 08:33am until January 16, 04:00am
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 12, 08:33am until January 16, 04:00am

    NOW until 4:00am Fri

    Air Stagnation Advisory

  • Today

    High: 54 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy dense fog before 9pm, then patchy dense fog after 10pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Widespread dense fog, mainly before 10am. Otherwise, partly sunny, with a high near 54. Calm wind.

    High: 54 °F

    Dense Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy dense fog. Otherwise, mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Widespread dense fog, mainly before 9am. Otherwise, partly sunny, with a high near 53. Calm wind.

    High: 53 °F

    Dense Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 39.

    Low: 39 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 56.

    High: 56 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog between 9am and 11am. Otherwise, partly sunny, with a high near 54. Calm wind.
Tonight
Patchy dense fog before 9pm, then patchy dense fog after 10pm. Otherwise, mostly cloudy, with a low around 38. Calm wind.
Tuesday
Widespread dense fog, mainly before 10am. Otherwise, partly sunny, with a high near 54. Calm wind.
Tuesday Night
Patchy dense fog. Otherwise, mostly cloudy, with a low around 36. Calm wind.
Wednesday
Widespread dense fog, mainly before 9am. Otherwise, partly sunny, with a high near 53. Calm wind.
Wednesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 39.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 56.
Friday Night
Mostly clear, with a low around 35.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 34.
Sunday
Sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
North Plains OR
 45.61°N 123°W (Elev. 207 ft)
Last Update:
8:20 am PST Jan 12, 2026
Forecast Valid:
8am PST Jan 12, 2026-6pm PST Jan 18, 2026
 
Forecast Discussion
 
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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