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

51°F

11°C

Humidity 65%
Wind Speed SW 11 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 07 Dec 06:53 PM PST
Extended Forecast for

Hermiston OR

Wind Advisory December 8, 04:00pm 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 42. Southwest wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 42 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Monday

    Monday: Rain likely, mainly between 1pm and 4pm. Cloudy, with a high near 62. Southwest wind 9 to 17 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.

    High: 62 °F

    Rain Likely

  • Monday Night

    Monday Night: Rain likely, mainly after 10pm. Cloudy, with a low around 49. Breezy, with a southwest wind around 23 mph, with gusts as high as 37 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 57. Southwest wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 46. Southwest wind 9 to 14 mph, with gusts as high as 24 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. Cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely. Cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Rain Likely

  • Thursday

    Thursday: A 40 percent chance of rain. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance Rain

  • Thursday Night

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

    Low: 42 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 42. Southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Monday
Rain likely, mainly between 1pm and 4pm. Cloudy, with a high near 62. Southwest wind 9 to 17 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.
Monday Night
Rain likely, mainly after 10pm. Cloudy, with a low around 49. Breezy, with a southwest wind around 23 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain. High near 57. Southwest wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Rain. Low around 46. Southwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely. Cloudy, with a high near 61. Chance of precipitation is 70%.
Wednesday Night
Rain likely. Cloudy, with a low around 49. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 58.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 42.
Friday
Partly sunny, with a high near 55.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 51.
Saturday Night
A slight chance of rain. Mostly cloudy, with a low around 38.
Sunday
A slight chance of rain. Mostly cloudy, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hermiston OR
 45.84°N 119.25°W (Elev. 548 ft)
Last Update:
3:20 pm PST Dec 7, 2025
Forecast Valid:
7pm 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