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.

Mist

30°F

-1°C

Humidity 100%
Wind Speed NW 3 MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint 30°F (-1°C)
Visibility 6.00 mi
Last update 24 Dec 11:20 PM PST
Extended Forecast for

Pasco WA

  • Tonight

    Tonight: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 33. Northeast wind around 5 mph becoming light and variable after midnight.

    Low: 33 °F

    Slight Chance
    Rain

  • Christmas Day

    Christmas Day: A chance of rain before 1pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 45. Northwest wind around 5 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 40 percent chance of rain, mainly after 7pm. Mostly cloudy, with a low around 35. Light and variable wind.

    Low: 35 °F

    Chance Rain

  • Friday

    Friday: A 50 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 49. Southwest wind 6 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm. Snow level 2100 feet lowering to 1100 feet after midnight . Partly cloudy, with a low around 33. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.

    Low: 33 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Saturday Night

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

    Low: 25 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 33. Northeast wind around 5 mph becoming light and variable after midnight.
Christmas Day
A chance of rain before 1pm, then a slight chance of rain after 4pm. Partly sunny, with a high near 45. Northwest wind around 5 mph. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of rain, mainly after 7pm. Mostly cloudy, with a low around 35. Light and variable wind.
Friday
A 50 percent chance of rain, mainly before 4pm. Mostly cloudy, with a high near 49. Southwest wind 6 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 20 percent chance of rain before 10pm. Snow level 2100 feet lowering to 1100 feet after midnight . Partly cloudy, with a low around 33. Southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 37.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 36.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 25.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 36.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 27.
Wednesday
Patchy fog. Otherwise, partly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pasco WA
 46.24°N 119.11°W (Elev. 397 ft)
Last Update:
9:22 pm PST Dec 24, 2025
Forecast Valid:
11pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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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