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-Troutdale Airport (KTTD)

Lat: 45.55111°NLon: 122.40889°WElev: 36.0ft.

Overcast

47°F

8°C

Humidity 70%
Wind Speed E 18 MPH
Barometer 29.44 in (996.95 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 24 Dec 12:53 AM PST
Extended Forecast for

Troutdale OR

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

  • Overnight

    Overnight: Rain. Low around 42. Windy, with an east wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.

    Low: 42 °F

    Rain and
    Windy

  • Wednesday

    Wednesday: Rain, mainly before 11am. High near 52. Windy, with a south wind 20 to 25 mph becoming south southwest 14 to 19 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%.

    High: 52 °F

    Windy. Rain
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 4am. Increasing clouds, with a low around 40. East wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 40 °F

    Mostly Clear
    then Rain
    Likely

  • Christmas Day

    Christmas Day: Rain. High near 50. Breezy, with an east wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 50 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain before 4am, then showers likely after 4am. Mostly cloudy, with a low around 38. East wind around 6 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely

  • Friday

    Friday: Showers. High near 47. Chance of precipitation is 80%.

    High: 47 °F

    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Snow level 2200 feet. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Rain. Low around 42. Windy, with an east wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.
Wednesday
Rain, mainly before 11am. High near 52. Windy, with a south wind 20 to 25 mph becoming south southwest 14 to 19 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 90%.
Wednesday Night
Rain likely, mainly after 4am. Increasing clouds, with a low around 40. East wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Christmas Day
Rain. High near 50. Breezy, with an east wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Thursday Night
A chance of rain before 4am, then showers likely after 4am. Mostly cloudy, with a low around 38. East wind around 6 mph. Chance of precipitation is 60%.
Friday
Showers. High near 47. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers. Snow level 2200 feet. Mostly cloudy, with a low around 37.
Saturday
Mostly cloudy, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 34.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 35.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Troutdale OR
 45.54°N 122.4°W (Elev. 102 ft)
Last Update:
12:56 am PST Dec 24, 2025
Forecast Valid:
1am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation