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

Walla Walla Regional Airport (KALW)

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

Clear

70°F

21°C

Humidity 37%
Wind Speed N 3 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 19 Apr 06:15 PM PDT
Extended Forecast for

Dayton WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Northeast wind around 6 mph becoming southeast after midnight.

    Low: 49 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 50. Light and variable wind becoming south around 6 mph after midnight.

    Low: 50 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain between 11am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 73. West wind 6 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Slight Chance
    Rain then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 44. Southwest wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Showers

  • Wednesday

    Wednesday: Rain. High near 52. Breezy. Chance of precipitation is 90%.

    High: 52 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 70%.

    Low: 41 °F

    Rain Likely
    and Breezy

  • Thursday

    Thursday: A 40 percent chance of rain. Partly sunny, with a high near 57.

    High: 57 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Northeast wind around 6 mph becoming southeast after midnight.
Monday
Mostly sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 50. Light and variable wind becoming south around 6 mph after midnight.
Tuesday
A slight chance of rain between 11am and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 73. West wind 6 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 44. Southwest wind 11 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain. High near 52. Breezy. Chance of precipitation is 90%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 70%.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 57.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 40.
Friday
Sunny, with a high near 62.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Dayton WA
 46.32°N 117.98°W (Elev. 1768 ft)
Last Update:
3:00 pm PDT Apr 19, 2026
Forecast Valid:
6pm PDT Apr 19, 2026-6pm PDT Apr 26, 2026
 
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