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

Tropical Storm Edouard to Impact the Northwest Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard will bring tropical storm to hurricane conditions, heavy rainfall, flash and some river flooding, and storm surge to portions of Upper Texas and southwestern Louisiana coasts into Wednesday. Severe thunderstorms are possible in the Central Plains and Mid-Atlantic. Hot and humid conditions will expand from the Central Plains into the Ohio Valley and Mid-Atlantic. Read More >

Current conditions at

Walla Walla Regional Airport (KALW)

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

Clear

75°F

24°C

Humidity 36%
Wind Speed SSW 5 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 01 Sep 02:00 PM PDT
Extended Forecast for

Dayton WA

  • This Afternoon

    This Afternoon: Cloudy early, then becoming mostly sunny, with a steady temperature around 79. Southwest wind 3 to 5 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers likely after 5am. Mostly cloudy, with a low around 52. Light southwest wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 74. Southwest wind 6 to 11 mph becoming light south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers, mainly after 2am. Low around 48. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 68. Southwest wind 5 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers. Partly sunny, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly sunny, with a high near 73.

    High: 73 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Cloudy early, then becoming mostly sunny, with a steady temperature around 79. Southwest wind 3 to 5 mph.
Tonight
Showers likely after 5am. Mostly cloudy, with a low around 52. Light southwest wind increasing to 10 to 15 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 74. Southwest wind 6 to 11 mph becoming light south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers, mainly after 2am. Low around 48. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 68. Southwest wind 5 to 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 45.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 69.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
A chance of showers. Mostly sunny, with a high near 75.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51.
Labor Day
Showers likely. Partly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton WA
 46.32°N 117.98°W (Elev. 1768 ft)
Last Update:
11:46 am PDT Sep 1, 2026
Forecast Valid:
2pm PDT Sep 1, 2026-6pm PDT Sep 7, 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