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

Heavy to Excessive Rainfall for the Southwest U.S.; Watching for Possible East Coast Storm

Thunderstorms and a chance for some isolated flash flooding will continue today in the Southwest U.S. before an influx of tropical moisture from Priscilla brings widespread heavy rainfall and a flash flooding threat late this week into this weekend. A coastal storm may develop off the southeast U.S. coast Friday night and drift north just off the Mid-Atlantic coast through the weekend. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

73°F

23°C

Humidity 27%
Wind Speed W 3 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 08 Oct 03:00 PM PDT
Extended Forecast for

Umatilla OR

  • Tonight

    Tonight: Mostly clear, with a low around 43. Northwest wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 47. North wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Increasing
    Clouds

  • Friday

    Friday: A 20 percent chance of showers before 11am. Mostly sunny, with a high near 73. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 73 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 11pm. Partly cloudy, with a low around 47. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 30 percent chance of showers, mainly after 11am. Mostly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Partly cloudy, with a low around 44.

    Low: 44 °F

    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly sunny, with a high near 61.

    High: 61 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 43. Northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 47. North wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers before 11am. Mostly sunny, with a high near 73. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A 20 percent chance of showers after 11pm. Partly cloudy, with a low around 47. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday
A 30 percent chance of showers, mainly after 11am. Mostly sunny, with a high near 65.
Saturday Night
A 40 percent chance of showers. Partly cloudy, with a low around 44.
Sunday
A 40 percent chance of showers. Mostly sunny, with a high near 61.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40.
Columbus Day
A chance of showers. Partly sunny, with a high near 60.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 37.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 58.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 37.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatilla OR
 45.91°N 119.33°W (Elev. 400 ft)
Last Update:
2:30 pm PDT Oct 8, 2025
Forecast Valid:
3pm PDT Oct 8, 2025-6pm PDT Oct 15, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation