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

23°F

-5°C

Humidity 85%
Wind Speed N 0 MPH
Barometer 30.45 in (1031.16 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 24 Jan 12:15 AM PST
Extended Forecast for

11 Miles SSW Mattawa WA

  • Overnight

    Overnight: Cloudy, with a low around 20. Northwest wind around 6 mph.

    Low: 20 °F

    Cloudy

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 22. West wind around 6 mph becoming southwest in the afternoon.

    High: 22 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 19. North wind around 6 mph.

    Low: 19 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 22. Northeast wind around 6 mph.

    High: 22 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Northwest wind around 5 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 30.

    High: 30 °F

    Mostly Cloudy

  • Monday Night

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

    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 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 20. Northwest wind around 6 mph.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 22. West wind around 6 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 19. North wind around 6 mph.
Sunday
Mostly sunny, with a high near 22. Northeast wind around 6 mph.
Sunday Night
Mostly cloudy, with a low around 22. Northwest wind around 5 mph.
Monday
Mostly cloudy, with a high near 30.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly cloudy, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles SSW Mattawa WA
 46.59°N 119.98°W (Elev. 3100 ft)
10:37 pm PST Jan 23, 2026
12am PST Jan 24, 2026-6pm PST Jan 30, 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