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

Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

81°F

27°C

Humidity 34%
Wind Speed WSW 16 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 28 Jul 10:35 AM PDT
Extended Forecast for

Umatilla OR

  • Today

    Today: Patchy smoke after 11am. Sunny, with a high near 90. Southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 90 °F

    Patchy Smoke

  • Tonight

    Tonight: Patchy smoke before 8pm. Clear, with a low around 56. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 24 mph.

    Low: 56 °F

    Patchy Smoke
    then Clear

  • Wednesday

    Wednesday: Patchy smoke after 2pm. Sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon.

    High: 89 °F

    Sunny then
    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 8pm. Mostly clear, with a low around 58. Southwest wind 3 to 7 mph.

    Low: 58 °F

    Patchy Smoke
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 89. Breezy.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

Detailed Forecast

Today
Patchy smoke after 11am. Sunny, with a high near 90. Southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tonight
Patchy smoke before 8pm. Clear, with a low around 56. Southwest wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 24 mph.
Wednesday
Patchy smoke after 2pm. Sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Patchy smoke before 8pm. Mostly clear, with a low around 58. Southwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 90. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 93.
Friday Night
Clear, with a low around 61.
Saturday
Sunny, with a high near 89. Breezy.
Saturday Night
Clear, with a low around 55. Breezy.
Sunday
Sunny, with a high near 83.
Sunday Night
Clear, with a low around 53.
Monday
Sunny, with a high near 86.
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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:
10:07 am PDT Jul 28, 2026
Forecast Valid:
10am PDT Jul 28, 2026-6pm PDT Aug 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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