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

  • Overnight

    Overnight: Partly cloudy early, then becoming cloudy, with a low around 39. Light northeast wind.

    Low: 39 °F

    Becoming
    Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 59. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 59 °F

    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32. West wind 7 to 14 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 53. Northwest wind around 6 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 30. East wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.

    High: 53 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely
    then Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy early, then becoming cloudy, with a low around 39. Light northeast wind.
Sunday
Cloudy, with a high near 59. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 32. West wind 7 to 14 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 53. Northwest wind around 6 mph.
Monday Night
Mostly clear, with a low around 30. East wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 53. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Thursday
A chance of rain, mainly after 11am. Partly sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 34.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
Last Update:
1:46 am PDT Mar 29, 2026
Forecast Valid:
2am PDT Mar 29, 2026-6pm PDT Apr 4, 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