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

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Walla Walla Regional Airport (KALW)

Lat: 46.09462°NLon: 118.2858°WElev: 1168.0ft.

Clear

93°F

34°C

Humidity 21%
Wind Speed WSW 6 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 02 Sep 02:00 PM PDT
Extended Forecast for

9 Miles NE Dayton WA

Extreme Heat Warning September 2, 02:26pm until September 4, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning September 2, 02:26pm until September 4, 08:00pm

    NOW until 8:00pm Thu

    Extreme Heat Warning

  • This Afternoon

    High: 95 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 70. Northwest wind 6 to 9 mph becoming southeast after midnight.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Widespread haze. Sunny and hot, with a high near 99. Southeast wind 7 to 9 mph becoming northwest in the morning.

    High: 99 °F

    Haze

  • Wednesday Night

    Wednesday Night: Widespread haze before 8pm. Mostly clear, with a low around 71. Northwest wind 8 to 10 mph becoming south in the evening.

    Low: 71 °F

    Haze then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South wind 9 to 11 mph becoming northwest in the afternoon.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 95. Northwest wind around 7 mph.
Tonight
Mostly clear, with a low around 70. Northwest wind 6 to 9 mph becoming southeast after midnight.
Wednesday
Widespread haze. Sunny and hot, with a high near 99. Southeast wind 7 to 9 mph becoming northwest in the morning.
Wednesday Night
Widespread haze before 8pm. Mostly clear, with a low around 71. Northwest wind 8 to 10 mph becoming south in the evening.
Thursday
Sunny, with a high near 97. South wind 9 to 11 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 69.
Friday
Sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 69.
Saturday
A 20 percent chance of showers after 11am. Partly sunny, with a high near 86.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 65.
Sunday
A chance of showers. Partly sunny, with a high near 83.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 63.
Monday
A slight chance of showers. Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NE Dayton WA
 46.42°N 117.85°W (Elev. 2001 ft)
Last Update:
2:20 pm PDT Sep 2, 2025
Forecast Valid:
2pm PDT Sep 2, 2025-6pm PDT Sep 8, 2025
 
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