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

Critical Fire Weather in the Plains; Unseasonably Warm in the Southwest and Southern U.S.

Unseasonably warm temperatures continue through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the Plains and Southeast U.S. this weekend. 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

  • Today

    Today: Areas of frost before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. West wind 3 to 8 mph.

    High: 66 °F

    Areas Frost
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. Southwest wind 5 to 9 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 59. Southwest wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 59 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. West wind 10 to 17 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 54. West wind 7 to 9 mph.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Rain Likely

Detailed Forecast

Today
Areas of frost before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. West wind 3 to 8 mph.
Tonight
Partly cloudy, with a low around 39. Southwest wind 5 to 9 mph.
Sunday
Mostly cloudy, with a high near 59. Southwest wind 5 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 31. West wind 10 to 17 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 54. West wind 7 to 9 mph.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 57.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.
Wednesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35.
Thursday
A chance of rain. Mostly sunny, with a high near 58.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 35.
Friday
Sunny, with a high near 61.
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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:
4:32 am PDT Mar 28, 2026
Forecast Valid:
5am PDT Mar 28, 2026-6pm PDT Apr 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation