Critical Fire Weather in the High Plains and Midwest; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

40°F

4°C

Humidity 61%
Wind Speed N 0 MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Feb 11:35 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: A 10 percent chance of showers after 4pm.  Snow level 800 feet rising to 1400 feet. Mostly sunny, with a high near 45. Southwest wind around 9 mph.

    High: 45 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Snow level 1100 feet lowering to 600 feet after midnight . Mostly cloudy, with a low around 28. Southwest wind around 6 mph becoming east after midnight.

    Low: 28 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow showers before 10am.  Mostly cloudy, with a high near 41. North wind 6 to 9 mph.

    High: 41 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. Northwest wind 3 to 6 mph.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 44. Southwest wind 3 to 7 mph.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of rain before 1am, then a chance of rain and snow.  Snow level 1800 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain and snow before 10am, then a chance of rain.  Snow level 1200 feet rising to 2200 feet in the afternoon. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.

    High: 48 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

Today
A 10 percent chance of showers after 4pm. Snow level 800 feet rising to 1400 feet. Mostly sunny, with a high near 45. Southwest wind around 9 mph.
Tonight
A 20 percent chance of showers before 10pm. Snow level 1100 feet lowering to 600 feet after midnight . Mostly cloudy, with a low around 28. Southwest wind around 6 mph becoming east after midnight.
Thursday
A 20 percent chance of snow showers before 10am. Mostly cloudy, with a high near 41. North wind 6 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 27. Northwest wind 3 to 6 mph.
Friday
Mostly sunny, with a high near 44. Southwest wind 3 to 7 mph.
Friday Night
Mostly cloudy, with a low around 27.
Saturday
Mostly cloudy, with a high near 45.
Saturday Night
A chance of rain before 1am, then a chance of rain and snow. Snow level 1800 feet. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Sunday
A chance of rain and snow before 10am, then a chance of rain. Snow level 1200 feet rising to 2200 feet in the afternoon. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
Sunday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 34.
Monday
Rain likely. Mostly cloudy, with a high near 50.
Monday Night
A chance of rain. Mostly cloudy, with a low around 33.
Tuesday
A chance of rain. Partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
9:16 am PST Feb 18, 2026
11am PST Feb 18, 2026-6pm PST Feb 24, 2026
 
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Additional Resources

Radar & Satellite Image

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