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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Partly Cloudy

39°F

4°C

Humidity 64%
Wind Speed SE 5 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Oct 11:35 PM PDT
Extended Forecast for

Umatilla OR

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Light and variable wind becoming northwest around 6 mph after midnight.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 59. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 59 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am. Otherwise, increasing clouds, with a low around 38. Northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 38 °F

    Partly Cloudy
    then Areas
    Frost

  • Columbus Day

    Columbus Day: Areas of frost before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 62. Calm wind.

    High: 62 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. Light and variable wind becoming northwest around 6 mph after midnight.
Sunday
Mostly sunny, with a high near 59. Northeast wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Areas of frost after 5am. Otherwise, increasing clouds, with a low around 38. Northeast wind 5 to 7 mph becoming calm in the evening.
Columbus Day
Areas of frost before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 62. Calm wind.
Monday Night
Clear, with a low around 33. Calm wind.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 40.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 72.
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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:
11:46 pm PDT Oct 10, 2026
Forecast Valid:
11pm PDT Oct 10, 2026-6pm PDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation