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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

Portland, Portland International Airport (KPDX)

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

Overcast

45°F

7°C

Humidity 87%
Wind Speed W 5 MPH
Barometer 29.33 in (993.23 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 24 Dec 03:35 AM PST
Extended Forecast for

Portland International Airport OR

Wind Advisory December 24, 07:00am until December 24, 04:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Rain. Steady temperature around 46. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

  • Wednesday

    Wednesday: Rain, mainly before 10am. High near 54. Windy, with an east wind 15 to 24 mph becoming south southwest in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%.

    High: 54 °F

    Rain and
    Breezy then
    Chance Rain
    and Windy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 40. East wind around 6 mph becoming north after midnight.

    Low: 40 °F

    Mostly Clear
    then Chance
    Rain

  • Christmas Day

    Christmas Day: Rain likely, mainly after 10am. Mostly cloudy, with a high near 52. East wind 7 to 9 mph. Chance of precipitation is 70%.

    High: 52 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 39. East wind around 5 mph.

    Low: 39 °F

    Chance Rain

  • Friday

    Friday: Showers likely. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.

    High: 48 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers. Snow level 2200 feet. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
Rain. Steady temperature around 46. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday
Rain, mainly before 10am. High near 54. Windy, with an east wind 15 to 24 mph becoming south southwest in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 40. East wind around 6 mph becoming north after midnight.
Christmas Day
Rain likely, mainly after 10am. Mostly cloudy, with a high near 52. East wind 7 to 9 mph. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 39. East wind around 5 mph.
Friday
Showers likely. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers. Snow level 2200 feet. Mostly cloudy, with a low around 38.
Saturday
Mostly cloudy, with a high near 47.
Saturday Night
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 34.
Sunday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 34.
Monday
Partly sunny, with a high near 50.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland International Airport OR
 45.58°N 122.59°W (Elev. 200 ft)
Last Update:
3:46 am PST Dec 24, 2025
Forecast Valid:
3am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation