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 81%
Wind Speed W 3 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 22 Jan 07:35 PM PST
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Cloudy, with a low around 24. West wind 3 to 5 mph.

    Low: 24 °F

    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 36. West wind 6 to 8 mph becoming north in the afternoon.

    High: 36 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly clear, with a low around 21. North wind around 5 mph becoming calm  in the evening.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 33. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 33 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20. Light and variable wind.

    Low: 20 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 34.

    High: 34 °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 37.

    High: 37 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 24. West wind 3 to 5 mph.
Friday
Mostly cloudy, with a high near 36. West wind 6 to 8 mph becoming north in the afternoon.
Friday Night
Mostly clear, with a low around 21. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 33. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 20. Light and variable wind.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Partly sunny, with a high near 37.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 42.
Wednesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 30.
Thursday
A slight chance of rain and snow. Mostly cloudy, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.21°N 119.75°W (Elev. 741 ft)
3:20 pm PST Jan 22, 2026
7pm PST Jan 22, 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