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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Tri-Cities Airport (KPSC)

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

Mist

27°F

-3°C

Humidity 96%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 26°F (-3°C)
Visibility 1.50 mi
Last update 01 Jan 08:53 AM PST
Extended Forecast for

4 Miles S Richland WA

Winter Weather Advisory January 1, 10:00am until January 2, 04:00am
Freezing Fog Advisory until January 1, 12:00pm
Air Stagnation Advisory January 1, 09:01am until January 1, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
Freezing Fog Advisory
Air Stagnation Advisory
  •  
    Freezing Fog Advisory until January 1, 12:00pm
    Air Stagnation Advisory January 1, 09:01am until January 1, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • New Year's Day

    High: 33 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain. Cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain. Mostly cloudy, with a high near 42. Calm wind becoming south around 5 mph in the afternoon.

    High: 42 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 35. North wind around 5 mph.

    Low: 35 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly cloudy, with a high near 44. Light and variable wind becoming northwest around 5 mph in the afternoon.

    High: 44 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain. Mostly cloudy, with a high near 51.

    High: 51 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain

Detailed Forecast

New Year's Day
A 20 percent chance of rain. Cloudy, with a high near 33. Calm wind.
Tonight
A 20 percent chance of rain. Cloudy, with a low around 31. Calm wind.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 42. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 35. North wind around 5 mph.
Saturday
A 20 percent chance of rain. Mostly cloudy, with a high near 44. Light and variable wind becoming northwest around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 51.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38.
Monday
A 20 percent chance of rain. Mostly cloudy, with a high near 48.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 35.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 47.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 36.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Richland WA
 46.24°N 119.3°W (Elev. 568 ft)
Last Update:
8:31 am PST Jan 1, 2026
Forecast Valid:
9am PST Jan 1, 2026-6pm PST Jan 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