Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Tri-Cities Airport (KPSC)

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

Partly Cloudy

23°F

-5°C

Humidity 85%
Wind Speed NNW 5 MPH
Barometer 30.64 in (1037.59 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 28 Dec 05:30 AM PST
Extended Forecast for

3 Miles SSW Wallula WA

  • Today

    Today: Mostly sunny, with a high near 36. North wind 3 to 5 mph.

    High: 36 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Light north wind.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 36. North wind 3 to 5 mph.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34. Light north wind.

    High: 34 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 34.

    High: 34 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 36. North wind 3 to 5 mph.
Tonight
Mostly cloudy, with a low around 31. Light north wind.
Monday
Partly sunny, with a high near 36. North wind 3 to 5 mph.
Monday Night
Mostly cloudy, with a low around 28. Calm wind.
Tuesday
Partly sunny, with a high near 34. Light north wind.
Tuesday Night
Partly cloudy, with a low around 28.
Wednesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 29.
New Year's Day
Mostly cloudy, with a high near 36.
Thursday Night
A slight chance of rain after 10pm. Mostly cloudy, with a low around 35.
Friday
A chance of rain. Mostly cloudy, with a high near 44.
Friday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 35.
Saturday
A slight chance of rain and snow. Mostly cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Wallula WA
 46.05°N 118.93°W (Elev. 479 ft)
4:20 am PST Dec 28, 2025
5am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
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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