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

Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

70°F

21°C

Humidity 37%
Wind Speed N 3 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 31 Aug 10:35 AM PDT
Extended Forecast for

9 Miles SSW Wallula WA

  • Today

    Today: Sunny, with a high near 89. North wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 61. North wind 5 to 7 mph becoming calm after midnight.

    Low: 61 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 86 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers after 11pm. Increasing clouds, with a low around 57. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 77. Southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers. Mostly sunny, with a high near 74.

    High: 74 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 89. North wind 5 to 10 mph, with gusts as high as 18 mph.
Tonight
Increasing clouds, with a low around 61. North wind 5 to 7 mph becoming calm after midnight.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 86. Southwest wind 5 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
A 40 percent chance of showers after 11pm. Increasing clouds, with a low around 57. Southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday
A 30 percent chance of showers, mainly before 11am. Partly sunny, with a high near 77. Southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Showers. Low around 54. Chance of precipitation is 80%.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 73.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 51.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 74.
Friday Night
A slight chance of showers before 11pm. Mostly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
A slight chance of showers. Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SSW Wallula WA
 45.98°N 119.01°W (Elev. 338 ft)
Last Update:
4:00 am PDT Aug 31, 2026
Forecast Valid:
10am PDT Aug 31, 2026-6pm PDT Sep 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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