National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms Likely in the Central U.S.; Flooding Possible for portions of Oklahoma/Texas/Arkansas and the Marianas.

Severe thunderstorms are likely from the southern Plains to the Midwest through Friday. Large hail, damaging winds, and tornadoes are all possible. An Enhanced (level 3 of 5) risk is in effect. Flash flooding is possible across portions of Oklahoma, Texas, and Arkansas on Friday. A Slight (level 2 of 4) risk is in effect. Flooding rain may impact Guam and the Marianas through next week. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

51°F

11°C

Humidity 50%
Wind Speed W 11 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 05 Mar 09:35 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: Mostly sunny, with a high near 56. West wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South wind 5 to 8 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 59. Southwest wind 5 to 7 mph.

    High: 59 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 43. Southwest wind around 6 mph.

    Low: 43 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 64. Southwest wind 6 to 9 mph.

    High: 64 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 56. West wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, with a low around 36. South wind 5 to 8 mph.
Friday
Mostly cloudy, with a high near 59. Southwest wind 5 to 7 mph.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 43. Southwest wind around 6 mph.
Saturday
Mostly cloudy, with a high near 64. Southwest wind 6 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 31.
Tuesday
A slight chance of rain and snow. Snow level rising to 1400 feet in the afternoon. Partly sunny, with a high near 50.
Tuesday Night
A slight chance of rain and snow. Snow level 1400 feet. Mostly cloudy, with a low around 31.
Wednesday
A chance of rain and snow. Snow level 1500 feet rising to 3000 feet in the afternoon. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
Last Update:
9:15 am PST Mar 5, 2026
Forecast Valid:
9am PST Mar 5, 2026-6pm PDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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