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

Heavy Rain and Flooding Possible in the Southwest U.S, Ohio Valley, and Hawaii

Heavy rainfall is expected to continue through Thursday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. Heavy rain and flash flooding is also expected over the southern Appalachians and Ohio Valley. Tropical Depression 15-E, southeast of Hawaii, is expected to bring heavy rain beginning today to the Big Island and Maui. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

75°F

24°C

Humidity 33%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 23 Sep 04:20 PM PDT
Extended Forecast for

Umatilla OR

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 80. Calm wind.

    High: 80 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 55. Light southwest wind.

    Low: 55 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Showers before 11am. High near 71. Breezy, with a southwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Showers then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. Southwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. Calm wind.
Thursday
Increasing clouds, with a high near 80. Calm wind.
Thursday Night
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 55. Light southwest wind.
Friday
Showers before 11am. High near 71. Breezy, with a southwest wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 45. Southwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
A slight chance of showers. Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatilla OR
 45.92°N 119.3°W (Elev. 400 ft)
Last Update:
3:01 pm PDT Sep 23, 2026
Forecast Valid:
4pm PDT Sep 23, 2026-6pm PDT Sep 30, 2026
 
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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