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

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. 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

  • Overnight

    Overnight: Mostly cloudy, with a low around 48. Southwest wind around 14 mph, with gusts as high as 21 mph.

    Low: 48 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 71. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 71 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Cloudy during the early evening, then gradual clearing, with a low around 47. South wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 47 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. Southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 51. Southwest wind 7 to 13 mph, with gusts as high as 18 mph.

    Low: 51 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 48. Southwest wind around 14 mph, with gusts as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 71. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Cloudy during the early evening, then gradual clearing, with a low around 47. South wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday
Partly sunny, with a high near 72. Southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 51. Southwest wind 7 to 13 mph, with gusts as high as 18 mph.
Thursday
Mostly cloudy, with a high near 74.
Thursday Night
Mostly cloudy, with a low around 51.
Friday
Mostly cloudy, with a high near 74.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 59.
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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:
3:07 am PDT Mar 17, 2026
Forecast Valid:
3am PDT Mar 17, 2026-6pm PDT Mar 23, 2026
 
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Additional Resources

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