Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

Lat: 46.3271°NLon: 119.9704°WElev: 768.0ft.

Clear

38°F

3°C

Humidity 58%
Wind Speed SE 3 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 24 Jan 03:15 PM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • Tonight

    Tonight: Mostly clear, with a low around 19. Southwest wind around 6 mph becoming north after midnight.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 22. Northwest wind 5 to 7 mph.

    High: 22 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Northwest wind around 6 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 30. Light and variable wind.

    High: 30 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Northwest wind 3 to 5 mph.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33.

    High: 33 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow after 4am.  Snow level 3800 feet. Mostly cloudy, with a low around 28. Chance of precipitation is 10%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 19. Southwest wind around 6 mph becoming north after midnight.
Sunday
Mostly sunny, with a high near 22. Northwest wind 5 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 22. Northwest wind around 6 mph.
Monday
Mostly cloudy, with a high near 30. Light and variable wind.
Monday Night
Partly cloudy, with a low around 24. Northwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Partly sunny, with a high near 35.
Wednesday Night
A slight chance of rain and snow after 4am. Snow level 3800 feet. Mostly cloudy, with a low around 28. Chance of precipitation is 10%.
Thursday
A slight chance of rain and snow before 10am. Snow level 3900 feet rising to 4500 feet in the afternoon. Partly sunny, with a high near 36.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 30.
Friday
A slight chance of rain and snow. Partly sunny, with a high near 38.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Partly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
3:20 pm PST Jan 24, 2026
3pm PST Jan 24, 2026-6pm PST Jan 31, 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