Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Fog

48°F

9°C

Humidity 93%
Wind Speed SW 3 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 46°F (8°C)
Visibility 0.50 mi
Last update 10 Dec 12:00 AM PST
Extended Forecast for

Umatilla OR

Wind Advisory December 10, 06:00am until December 11, 07:00am
Click here for hazard details and duration
Wind Advisory
  • Overnight

    Overnight: A 50 percent chance of rain before 1am.  Patchy fog before 1am.  Otherwise, mostly cloudy, with a temperature rising to around 53 by 5am. South wind 6 to 9 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 43 mph.

    High: 65 °F

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53. Southwest wind around 20 mph, with gusts as high as 32 mph.

    Low: 53 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain.  Mostly cloudy, with a high near 63. Southwest wind around 17 mph, with gusts as high as 25 mph.

    High: 63 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. Southwest wind 6 to 9 mph.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of rain before 1am. Patchy fog before 1am. Otherwise, mostly cloudy, with a temperature rising to around 53 by 5am. South wind 6 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly cloudy, with a high near 65. Breezy, with a southwest wind 18 to 23 mph, with gusts as high as 43 mph.
Wednesday Night
Mostly cloudy, with a low around 53. Southwest wind around 20 mph, with gusts as high as 32 mph.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 63. Southwest wind around 17 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 48. Southwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 61.
Friday Night
Mostly cloudy, with a low around 43.
Saturday
Partly sunny, with a high near 56.
Saturday Night
Mostly cloudy, with a low around 42.
Sunday
Partly sunny, with a high near 54.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 40.
Monday
A chance of rain. Mostly cloudy, with a high near 55.
Monday Night
Rain likely. Mostly cloudy, with a low around 43.
Tuesday
A chance of rain. Partly sunny, with a high near 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Umatilla OR
 45.91°N 119.33°W (Elev. 400 ft)
10:45 pm PST Dec 9, 2025
12am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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