Major Winter Storm Ongoing in the Upper Midwest and Great Lakes; Severe Weather Along the East Coast

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through today across the Upper Midwest and Upper Great Lakes. Widespread severe storms are expected across the entire eastern U.S. with the highest threat over the interior Mid-Atlantic, where there is a risk for damaging wind gusts and a few tornadoes. Heat continues to build in the West. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

N/A

Humidity 87%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 70. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 48. Southwest wind 7 to 11 mph.

    Low: 48 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 73. Southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 73 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 52. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 75.

    High: 75 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain after 11pm.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. Southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 70. Southwest wind 10 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 48. Southwest wind 7 to 11 mph.
Wednesday
Mostly cloudy, with a high near 73. Southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 52. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday
Mostly cloudy, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Mostly cloudy, with a high near 74.
Friday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
3:31 pm PDT Mar 16, 2026
3pm PDT Mar 16, 2026-6pm PDT Mar 23, 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