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

Sunnyside Municipal Airport (K1S5)

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

Clear

30°F

-1°C

Humidity 84%
Wind Speed NE 5 MPH
Barometer 29.64 in (1003.73 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 14 Mar 02:15 AM PDT
Extended Forecast for

Prosser WA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 33. Southwest wind around 7 mph.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 52. South wind 5 to 7 mph becoming southeast in the afternoon.

    High: 52 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 37. East wind 6 to 8 mph becoming southwest after midnight.

    Low: 37 °F

    Chance Rain

  • Saturday

    Saturday: A 40 percent chance of rain. Partly sunny, with a high near 56. Breezy, with a southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 56 °F

    Chance Rain
    and Breezy

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 38. Southwest wind 15 to 20 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely, mainly after 11am. Mostly cloudy, with a high near 51. Chance of precipitation is 70%.

    High: 51 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely
    then Chance
    Rain

  • Monday

    Monday: A 30 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 55.

    High: 55 °F

    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 33. Southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 52. South wind 5 to 7 mph becoming southeast in the afternoon.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37. East wind 6 to 8 mph becoming southwest after midnight.
Saturday
A 40 percent chance of rain. Partly sunny, with a high near 56. Breezy, with a southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Rain likely. Mostly cloudy, with a low around 38. Southwest wind 15 to 20 mph decreasing to 9 to 14 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 51. Chance of precipitation is 70%.
Sunday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
A 30 percent chance of rain, mainly after 11am. Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 36.
Thursday
Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
Last Update:
1:27 am PDT Mar 14, 2025
Forecast Valid:
2am PDT Mar 14, 2025-6pm PDT Mar 20, 2025
 
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Additional Resources

Radar & Satellite Image

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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