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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Hermiston, Hermiston Municipal Airport (KHRI)

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

Clear

79°F

26°C

Humidity 34%
Wind Speed W 10 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Aug 01:05 PM PDT
Extended Forecast for

Umatilla OR

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 86. West wind around 7 mph.

    High: 86 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 61. Southwest wind 3 to 6 mph.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 8am. Partly sunny, then gradually becoming sunny, with a high near 89. West wind 5 to 8 mph.

    High: 89 °F

    Slight Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Southwest wind 6 to 8 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. West wind 3 to 6 mph.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 86. West wind around 7 mph.
Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 61. Southwest wind 3 to 6 mph.
Monday
A 20 percent chance of showers before 8am. Partly sunny, then gradually becoming sunny, with a high near 89. West wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 59. Southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 90. West wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 56.
Thursday
Sunny, with a high near 92.
Thursday Night
Clear, with a low around 58.
Friday
Sunny, with a high near 97.
Friday Night
Clear, with a low around 60.
Saturday
Sunny and hot, with a high near 100.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Umatilla OR
 45.91°N 119.33°W (Elev. 400 ft)
Last Update:
1:02 pm PDT Aug 17, 2025
Forecast Valid:
1pm PDT Aug 17, 2025-6pm PDT Aug 23, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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