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

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Hazardous Weather Conditions

Current conditions at

Walla Walla Regional Airport (KALW)

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

Mist

36°F

2°C

Humidity 100%
Wind Speed SSW 3 MPH
Barometer 29.5 in (998.99 mb)
Dewpoint 36°F (2°C)
Visibility 0.75 mi
Last update 24 Dec 04:53 AM PST
Extended Forecast for

Walla Walla WA

Dense Fog Advisory December 24, 05:14am until December 24, 06:00am
High Wind Warning December 24, 07:00am until December 24, 02:00pm
Click here for hazard details and duration
...
High Wind Warning
  •  
    Dense Fog Advisory December 24, 05:14am until December 24, 06:00am

    NOW until 6:00am Wed

    Dense Fog Advisory

  • Today

    High: 57 °F

    Chance Rain
    and Breezy

  • Tonight

    Tonight: A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 36. Southeast wind around 6 mph becoming calm after midnight.

    Low: 36 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Christmas Day

    Christmas Day: A 40 percent chance of rain. Mostly cloudy, with a high near 50. Southeast wind around 7 mph becoming southwest in the afternoon.

    High: 50 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 36. South wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance Rain

  • Friday

    Friday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 49. Southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Rain Likely

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before 10pm. Snow level 2100 feet. Partly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain before 10am, then a slight chance of rain after 1pm. Cloudy, with a high near 57. Breezy, with a south wind 7 to 12 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 46 mph. Chance of precipitation is 30%.
Tonight
A 10 percent chance of rain before 7pm. Mostly cloudy, with a low around 36. Southeast wind around 6 mph becoming calm after midnight.
Christmas Day
A 40 percent chance of rain. Mostly cloudy, with a high near 50. Southeast wind around 7 mph becoming southwest in the afternoon.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36. South wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 49. Southwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 40 percent chance of rain, mainly before 10pm. Snow level 2100 feet. Partly cloudy, with a low around 33.
Saturday
Partly sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Partly sunny, with a high near 40.
Monday Night
Mostly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walla Walla WA
 46.06°N 118.35°W (Elev. 928 ft)
Last Update:
4:37 am PST Dec 24, 2025
Forecast Valid:
5am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation