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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Tri-Cities Airport (KPSC)

Lat: 46.26955°NLon: 119.11813°WElev: 397.0ft.

Clear

59°F

15°C

Humidity 54%
Wind Speed SW 23 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 07 Dec 02:35 PM PST
Extended Forecast for

3 Miles SSW Wallula WA

Wind Advisory December 8, 07:00pm until December 9, 07:00am
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of rain, mainly before 4pm. Cloudy early, then clearing, with a high near 56. South wind around 17 mph, with gusts as high as 28 mph.

    High: 56 °F

    Chance Rain

  • Tonight

    Tonight: A 20 percent chance of rain between 1am and 4am. Increasing clouds, with a low around 49. Southwest wind around 20 mph, with gusts as high as 28 mph.

    Low: 49 °F

    Slight Chance
    Rain

  • Monday

    Monday: Rain likely, mainly between 7am and 1pm. Cloudy, with a high near 61. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 61 °F

    Rain Likely
    and Breezy

  • Monday Night

    Monday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 50. Windy, with a southwest wind 32 to 37 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Rain Likely
    and Windy

  • Tuesday

    Tuesday: Rain. High near 55. Breezy, with a south wind 24 to 29 mph decreasing to 10 to 15 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 55 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain. Low around 51. Breezy. Chance of precipitation is 90%.

    Low: 51 °F

    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain. High near 57. Breezy. Chance of precipitation is 80%.

    High: 57 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 54.

    High: 54 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 30 percent chance of rain, mainly before 4pm. Cloudy early, then clearing, with a high near 56. South wind around 17 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of rain between 1am and 4am. Increasing clouds, with a low around 49. Southwest wind around 20 mph, with gusts as high as 28 mph.
Monday
Rain likely, mainly between 7am and 1pm. Cloudy, with a high near 61. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 50. Windy, with a southwest wind 32 to 37 mph, with gusts as high as 46 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 55. Breezy, with a south wind 24 to 29 mph decreasing to 10 to 15 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 51. Breezy. Chance of precipitation is 90%.
Wednesday
Rain. High near 57. Breezy. Chance of precipitation is 80%.
Wednesday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 54.
Thursday Night
A chance of rain, mainly before 10pm. Mostly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 53.
Friday Night
Mostly cloudy, with a low around 45.
Saturday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Wallula WA
 46.05°N 118.93°W (Elev. 479 ft)
Last Update:
2:30 pm PST Dec 7, 2025
Forecast Valid:
2pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
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