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.

Overcast

31°F

-1°C

Humidity 84%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 23 Jan 04:35 AM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • Today

    Today: Cloudy through mid morning, then gradual clearing, with a high near 22. North wind around 9 mph.

    High: 22 °F

    Gradual
    Clearing

  • Tonight

    Tonight: Mostly clear during the early evening, then becoming cloudy, with a low around 20. Northwest wind around 6 mph.

    Low: 20 °F

    Becoming
    Cloudy

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 22. North wind around 6 mph.

    High: 22 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Mostly clear during the early evening, then becoming cloudy, with a low around 19. Southwest wind around 6 mph becoming north after midnight.

    Low: 19 °F

    Becoming
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 23. North wind around 6 mph becoming light and variable  in the afternoon.

    High: 23 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing, with a high near 22. North wind around 9 mph.
Tonight
Mostly clear during the early evening, then becoming cloudy, with a low around 20. Northwest wind around 6 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 22. North wind around 6 mph.
Saturday Night
Mostly clear during the early evening, then becoming cloudy, with a low around 19. Southwest wind around 6 mph becoming north after midnight.
Sunday
Mostly sunny, with a high near 23. North wind around 6 mph becoming light and variable in the afternoon.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Partly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 34.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
4:21 am PST Jan 23, 2026
4am PST Jan 23, 2026-6pm PST Jan 29, 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