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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Tri-Cities Airport (KPSC)

Lat: 46.26955°NLon: 119.11813°WElev: 397.0ft.

Overcast

40°F

4°C

Humidity 92%
Wind Speed NNW 4 MPH
Barometer 29.55 in (1000.68 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 24 Dec 05:06 AM PST
Extended Forecast for

Pasco WA

  • Today

    Today: A chance of rain between 7am and 10am. Mostly cloudy, with a high near 51. Northwest wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain
    then Mostly
    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 32 °F

    Mostly Cloudy

  • Christmas Day

    Christmas Day: A 30 percent chance of rain. Mostly cloudy, with a high near 45. Northwest wind around 5 mph.

    High: 45 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Chance Rain

  • Friday

    Friday: A 40 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 48. Southwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 48 °F

    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

Detailed Forecast

Today
A chance of rain between 7am and 10am. Mostly cloudy, with a high near 51. Northwest wind 6 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 30%.
Tonight
Mostly cloudy, with a low around 32. Southeast wind 5 to 7 mph becoming light and variable after midnight.
Christmas Day
A 30 percent chance of rain. Mostly cloudy, with a high near 45. Northwest wind around 5 mph.
Thursday Night
A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 33. Light and variable wind.
Friday
A 40 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 48. Southwest wind 7 to 15 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Mostly cloudy, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
Mostly cloudy, with a high near 38.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pasco WA
 46.26°N 119.11°W (Elev. 400 ft)
Last Update:
4:37 am PST Dec 24, 2025
Forecast Valid:
5am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation