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

A Wintry Mix in the Northeast; Rain and High Elevation Snow Returns to California

A clipper system tracking across the U.S./Canadian border will bring snowfall and mixed precipitation across the Northeast. A modest atmospheric river associated with a Pacific system will bring lower elevation/coastal rain, high elevation snow/wintry mix, and gusty winds in California into the Intermountain West. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

33°F

1°C

Humidity 91%
Wind Speed N 4 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 09 Feb 11:35 PM PST
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Light east wind.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 47. West wind 5 to 9 mph becoming north in the afternoon.

    High: 47 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 30. Northwest wind around 7 mph.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 48. Northwest wind around 5 mph.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Thursday Night

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

    Low: 32 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
Partly cloudy, with a low around 31. Light east wind.
Tuesday
Mostly cloudy, with a high near 47. West wind 5 to 9 mph becoming north in the afternoon.
Tuesday Night
Partly cloudy, with a low around 30. Northwest wind around 7 mph.
Wednesday
Sunny, with a high near 48. Northwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 31. Calm wind.
Thursday
Mostly cloudy, with a high near 47.
Thursday Night
Partly cloudy, with a low around 32.
Friday
Mostly cloudy, with a high near 47.
Friday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 34.
Saturday
A chance of rain, mainly after 10am. Mostly cloudy, with a high near 47.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 30.
Sunday
A slight chance of rain and snow. Snow level 1500 feet. Partly sunny, with a high near 46.
Sunday Night
A slight chance of rain and snow. Snow level 1600 feet. Partly cloudy, with a low around 30.
Washington's Birthday
A slight chance of rain and snow. Snow level 900 feet rising to 1400 feet in the afternoon. Mostly cloudy, with a high near 45.
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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:
9:20 pm PST Feb 9, 2026
Forecast Valid:
11pm PST Feb 9, 2026-6pm PST Feb 16, 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