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

Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

46°F

8°C

Humidity 93%
Wind Speed SSE 4 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 09 Sep 05:05 AM PDT
Extended Forecast for

Hermiston OR

  • Today

    Today: Sunny, with a high near 86. Calm wind.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 53. Calm wind becoming south around 5 mph after midnight.

    Low: 53 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Partly sunny, with a high near 85. South wind 5 to 10 mph becoming west 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 85 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.

    Low: 50 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 76. Southwest wind around 8 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after 11am. Partly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers before 11am. Mostly sunny, with a high near 71.

    High: 71 °F

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 86. Calm wind.
Tonight
Increasing clouds, with a low around 53. Calm wind becoming south around 5 mph after midnight.
Thursday
Partly sunny, with a high near 85. South wind 5 to 10 mph becoming west 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 50. Southwest wind 10 to 18 mph, with gusts as high as 32 mph.
Friday
Mostly sunny, with a high near 76. Southwest wind around 8 mph.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
A 30 percent chance of showers after 11am. Partly sunny, with a high near 71.
Saturday Night
Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers before 11am. Mostly sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 45.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hermiston OR
 45.84°N 119.25°W (Elev. 548 ft)
Last Update:
4:06 am PDT Sep 9, 2026
Forecast Valid:
5am PDT Sep 9, 2026-6pm PDT Sep 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation