Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. 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 39. Light south wind.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain before 11am.  Mostly cloudy, with a high near 68. Light south wind increasing to 5 to 9 mph in the afternoon.

    High: 68 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 50. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 49. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 72.

    High: 72 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51.

    Low: 51 °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 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 39. Light south wind.
Monday
A 20 percent chance of rain before 11am. Mostly cloudy, with a high near 68. Light south wind increasing to 5 to 9 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 50. Southwest wind 8 to 13 mph, with gusts as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 71. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 49. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
Mostly cloudy, with a high near 75.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
Mostly cloudy, with a high near 73.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Mostly 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)
10:15 pm PDT Mar 15, 2026
11pm PDT Mar 15, 2026-6pm PDT Mar 22, 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