Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

31°F

-1°C

Humidity 82%
Wind Speed N 0 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Feb 07:55 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: Mostly cloudy, with a high near 43. South wind 3 to 6 mph.

    High: 43 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. East wind around 6 mph becoming northwest after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow between 10am and 1pm, then a slight chance of rain after 1pm.  Snow level rising to 1700 feet in the afternoon. Mostly cloudy, with a high near 43. North wind 6 to 9 mph.  Chance of precipitation is 20%.

    High: 43 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 30. North wind 7 to 9 mph.

    Low: 30 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Rain likely, mainly after 4pm.  Mostly cloudy, with a high near 50. North wind 6 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain.  Low around 37. Chance of precipitation is 80%.

    Low: 37 °F

    Rain

  • Monday

    Monday: Rain.  High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Rain

  • Monday Night

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

    Low: 38 °F

    Rain Likely

  • Tuesday

    Tuesday: A 40 percent chance of rain.  Mostly sunny, with a high near 53.

    High: 53 °F

    Chance Rain

Detailed Forecast

Today
Mostly cloudy, with a high near 43. South wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 28. East wind around 6 mph becoming northwest after midnight.
Saturday
A slight chance of snow between 10am and 1pm, then a slight chance of rain after 1pm. Snow level rising to 1700 feet in the afternoon. Mostly cloudy, with a high near 43. North wind 6 to 9 mph. Chance of precipitation is 20%.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 30. North wind 7 to 9 mph.
Sunday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 50. North wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Rain. Low around 37. Chance of precipitation is 80%.
Monday
Rain. High near 52. Chance of precipitation is 80%.
Monday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of rain. Mostly sunny, with a high near 53.
Tuesday Night
A chance of rain, mainly before 10pm. Partly cloudy, with a low around 32.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 52.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 35.
Thursday
A chance of rain. Mostly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
4:21 am PST Feb 20, 2026
8am PST Feb 20, 2026-6pm PST Feb 26, 2026
 
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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