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

Heavy Rain in the Southern U.S.; Active Weather Continues in Alaska

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains today, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. Another Bering system will impact the Alaskan West Coast and Central Interior through the weekend bringing moderate to heavy snow, high winds, and/or some blizzard conditions. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

47°F

8°C

Humidity 67%
Wind Speed ESE 4 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 14 Feb 04:15 PM PST
Extended Forecast for

Prosser WA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain. Cloudy, with a high near 48. South wind around 5 mph.

    High: 48 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly before 10pm. Cloudy, with a low around 37. West wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain Likely

  • Sunday

    Sunday: A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 48. Light and variable wind.

    High: 48 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 36. Light southwest wind.

    Low: 36 °F

    Slight Chance
    Rain

  • Washington's Birthday

    Washington's Birthday: A 50 percent chance of rain. Cloudy, with a high near 46. Light west wind becoming southwest 5 to 9 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain before 10pm, then a slight chance of rain and snow. Snow level 1800 feet lowering to 1100 feet after midnight . Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A chance of rain and snow before 1pm, then a chance of rain. Snow level 800 feet rising to 1700 feet in the afternoon. Partly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain before 10pm, then a slight chance of rain and snow. Snow level 1800 feet lowering to 1100 feet after midnight . Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of snow before 10am, then a slight chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Snow level rising to 1200 feet in the afternoon. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A 40 percent chance of rain. Cloudy, with a high near 48. South wind around 5 mph.
Tonight
Rain likely, mainly before 10pm. Cloudy, with a low around 37. West wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 48. Light and variable wind.
Sunday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 36. Light southwest wind.
Washington's Birthday
A 50 percent chance of rain. Cloudy, with a high near 46. Light west wind becoming southwest 5 to 9 mph in the morning. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of rain before 10pm, then a slight chance of rain and snow. Snow level 1800 feet lowering to 1100 feet after midnight . Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow before 1pm, then a chance of rain. Snow level 800 feet rising to 1700 feet in the afternoon. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Tuesday Night
A chance of rain before 10pm, then a slight chance of rain and snow. Snow level 1800 feet lowering to 1100 feet after midnight . Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
A slight chance of snow before 10am, then a slight chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Snow level rising to 1200 feet in the afternoon. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Wednesday Night
A chance of rain before 10pm, then a slight chance of rain and snow. Snow level 1400 feet lowering to 700 feet after midnight . Mostly cloudy, with a low around 28.
Thursday
A chance of rain and snow. Snow level rising to 1100 feet in the afternoon. Partly sunny, with a high near 45.
Thursday Night
A chance of rain and snow. Snow level 1100 feet. Mostly cloudy, with a low around 29.
Friday
A chance of rain and snow. Snow level 800 feet rising to 1500 feet in the afternoon. Partly sunny, with a high near 46.
Friday Night
A chance of rain and snow. Snow level 1400 feet. Mostly cloudy, with a low around 31.
Saturday
A chance of rain and snow. Snow level 1000 feet rising to 1700 feet in the afternoon. Mostly cloudy, with a high near 47.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
Last Update:
3:20 pm PST Feb 14, 2026
Forecast Valid:
4pm PST Feb 14, 2026-6pm PST Feb 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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