Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

N/A

Humidity 87%
Wind Speed N 0 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update 10 Mar 07:35 AM PDT
Extended Forecast for

Prosser WA

  • Tonight

    Tonight: Rain likely, mainly after 5am.  Mostly cloudy, with a low around 39. Light south wind.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Mostly Cloudy
    then Rain
    Likely

  • Wednesday

    Wednesday: Rain, mainly after 2pm.  High near 55. Calm wind becoming southeast 5 to 7 mph in the afternoon.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 11pm.  Cloudy, then gradually becoming partly cloudy, with a low around 35. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Rain Likely
    then Partly
    Cloudy

  • Thursday

    Thursday: A 20 percent chance of rain after 11am.  Partly sunny, with a high near 58. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 58 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. West wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain likely, mainly after 5am. Mostly cloudy, with a low around 39. Light south wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 2pm. High near 55. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 35. Southwest wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A 20 percent chance of rain after 11am. Partly sunny, with a high near 58. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 34. West wind 5 to 10 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Partly sunny, with a high near 72.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Partly sunny, with a high near 74.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 71.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
8:01 pm PDT Mar 31, 2026
8pm PDT Mar 31, 2026-6pm PDT Apr 7, 2026
 
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Additional Resources

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