Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

32°F

0°C

Humidity 74%
Wind Speed N 0 MPH
Barometer 30.38 in (1028.79 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 21 Jan 09:35 PM PST
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 35. Light and variable wind.

    High: 35 °F

    Cloudy

  • Thursday Night

    Thursday Night: Cloudy, then gradually becoming partly cloudy, with a low around 23. Light northwest wind.

    Low: 23 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 37. North wind 5 to 7 mph.

    High: 37 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 20. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 26. Calm wind.
Thursday
Cloudy, with a high near 35. Light and variable wind.
Thursday Night
Cloudy, then gradually becoming partly cloudy, with a low around 23. Light northwest wind.
Friday
Sunny, with a high near 37. North wind 5 to 7 mph.
Friday Night
Mostly clear, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Mostly cloudy, with a low around 23.
Monday
Partly sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Partly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
A slight chance of rain and snow. Mostly cloudy, with a high near 42.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
9:27 pm PST Jan 21, 2026
9pm PST Jan 21, 2026-6pm PST Jan 28, 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