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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

30°F

-1°C

Humidity 96%
Wind Speed N 0 MPH
Barometer 30.44 in (1030.82 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 11 Jan 12:15 AM PST
Extended Forecast for

Prosser WA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 35. Calm wind.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48. South wind 3 to 5 mph.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 54. Southwest wind 6 to 8 mph.

    High: 54 °F

    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 35. Southwest wind 3 to 6 mph.

    Low: 35 °F

    Patchy Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 35. Calm wind.
Sunday
Partly sunny, with a high near 48. South wind 3 to 5 mph.
Sunday Night
Mostly cloudy, with a low around 34. Light south wind.
Monday
Partly sunny, with a high near 54. Southwest wind 6 to 8 mph.
Monday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 35. Southwest wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
Last Update:
10:37 pm PST Jan 10, 2026
Forecast Valid:
12am PST Jan 11, 2026-6pm PST Jan 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation