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

Hermiston, Hermiston Municipal Airport (KHRI)

Lat: 45.82583°NLon: 119.26111°WElev: 636.0ft.

Clear

47°F

8°C

Humidity 76%
Wind Speed SSW 6 MPH
Barometer 30.19 in (1022.35 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 07 Dec 09:53 PM PST
Extended Forecast for

Paterson WA

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

  • Tonight

    Tonight: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 43. Southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    Low: 43 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain likely, mainly after 1pm. Cloudy, with a high near 59. Southwest wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Rain Likely

  • Monday Night

    Monday Night: Rain likely, mainly after 4am. Mostly cloudy, with a low around 49. Breezy, with a southwest wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Rain Likely
    and Breezy

  • Tuesday

    Tuesday: Rain. High near 55. Southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 46. Southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Rain

  • Wednesday

    Wednesday: Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.

    High: 60 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Rain Likely

  • Thursday

    Thursday: A 40 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Slight Chance
    Rain then
    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 43. Southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday
Rain likely, mainly after 1pm. Cloudy, with a high near 59. Southwest wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 49. Breezy, with a southwest wind around 23 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 55. Southwest wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 46. Southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 56.
Thursday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 54.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 52.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
Sunday
A slight chance of rain. Mostly cloudy, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Paterson WA
 45.95°N 119.59°W (Elev. 479 ft)
Last Update:
9:15 pm PST Dec 7, 2025
Forecast Valid:
10pm PST Dec 7, 2025-6pm PST Dec 14, 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