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

Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Hazardous Weather Conditions

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

23°F

-5°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

Prosser WA

High Wind Warning March 11, 05:00pm until March 12, 11:00am
Click here for hazard details and duration
High Wind Warning

  • This Afternoon

    This Afternoon: A 40 percent chance of rain. Mostly cloudy, with a high near 57. Breezy, with a southwest wind 16 to 25 mph, with gusts as high as 36 mph.

    High: 57 °F

    Chance Rain
    and Breezy

  • Tonight

    Tonight: A 50 percent chance of rain. Mostly cloudy, with a low around 43. Breezy, with a southwest wind 24 to 26 mph, with gusts as high as 41 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance Rain
    and Breezy

  • Thursday

    Thursday: A 50 percent chance of rain. Mostly cloudy, with a high near 56. Breezy, with a west wind 20 to 22 mph, with gusts as high as 37 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance Rain
    and Breezy

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 41. Southwest wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Rain Likely

  • Friday

    Friday: Rain likely. Cloudy, with a high near 56. Southwest wind 7 to 11 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

  • Saturday

    Saturday: A 20 percent chance of rain before 11am. Snow level 2900 feet lowering to 1500 feet. Mostly sunny, with a high near 54.

    High: 54 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain before 8am, then a slight chance of rain and snow between 8am and 11am, then a chance of rain after 11am. Snow level 1200 feet rising to 3200 feet in the afternoon. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Mostly cloudy, with a high near 57. Breezy, with a southwest wind 16 to 25 mph, with gusts as high as 36 mph.
Tonight
A 50 percent chance of rain. Mostly cloudy, with a low around 43. Breezy, with a southwest wind 24 to 26 mph, with gusts as high as 41 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 56. Breezy, with a west wind 20 to 22 mph, with gusts as high as 37 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain likely. Cloudy, with a low around 41. Southwest wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Rain likely. Cloudy, with a high near 56. Southwest wind 7 to 11 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Saturday
A 20 percent chance of rain before 11am. Snow level 2900 feet lowering to 1500 feet. Mostly sunny, with a high near 54.
Saturday Night
Mostly cloudy, with a low around 33.
Sunday
A slight chance of rain before 8am, then a slight chance of rain and snow between 8am and 11am, then a chance of rain after 11am. Snow level 1200 feet rising to 3200 feet in the afternoon. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 39.
Monday
A slight chance of rain. Partly sunny, with a high near 68.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 44.
Tuesday
Partly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.21°N 119.75°W (Elev. 741 ft)
Last Update:
1:46 pm PDT Mar 11, 2026
Forecast Valid:
1pm PDT Mar 11, 2026-6pm PDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation