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

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

44°F

7°C

Humidity 89%
Wind Speed N 0 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 05 Feb 06:55 PM PST
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Patchy dense fog after 1am. Otherwise, cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Cloudy then
    Patchy Dense
    Fog

  • Friday

    Friday: Areas of fog before 1pm, then patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 42. Light southeast wind.

    High: 42 °F

    Areas Fog

  • Friday Night

    Friday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 1pm. Otherwise, mostly cloudy, with a high near 46. Calm wind becoming south around 6 mph in the afternoon.

    High: 46 °F

    Areas Fog

  • Saturday Night

    Saturday Night: A 40 percent chance of rain. Cloudy, with a low around 43. Southwest wind around 6 mph.

    Low: 43 °F

    Chance Rain

  • Sunday

    Sunday: Rain likely. Cloudy, with a high near 54. Chance of precipitation is 70%.

    High: 54 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely
    then Chance
    Rain

  • Monday

    Monday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy dense fog after 1am. Otherwise, cloudy, with a low around 34. Light south wind.
Friday
Areas of fog before 1pm, then patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 42. Light southeast wind.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 35. Calm wind.
Saturday
Areas of fog before 1pm. Otherwise, mostly cloudy, with a high near 46. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
A 40 percent chance of rain. Cloudy, with a low around 43. Southwest wind around 6 mph.
Sunday
Rain likely. Cloudy, with a high near 54. Chance of precipitation is 70%.
Sunday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 50.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
A slight chance of rain. Mostly cloudy, with a high near 51.
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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:
6:40 pm PST Feb 5, 2026
Forecast Valid:
7pm PST Feb 5, 2026-6pm PST Feb 12, 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