Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Fog

37°F

3°C

Humidity 99%
Wind Speed N 0 MPH
Barometer 30.3 in (1026.08 mb)
Dewpoint 37°F (3°C)
Visibility -0.25 mi
Last update 30 Jan 06:15 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: A 20 percent chance of rain after 10am.  Cloudy, with a high near 49. Calm wind becoming south around 5 mph in the afternoon.

    High: 49 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. South wind around 5 mph becoming calm  in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Cloudy, with a high near 50. North wind 3 to 6 mph.

    High: 50 °F

    Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. North wind 3 to 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 52. Calm wind becoming south 5 to 7 mph in the morning.

    High: 52 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 52.

    High: 52 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 10am. Cloudy, with a high near 49. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 36. South wind around 5 mph becoming calm in the evening.
Saturday
Cloudy, with a high near 50. North wind 3 to 6 mph.
Saturday Night
Mostly cloudy, with a low around 36. North wind 3 to 5 mph.
Sunday
Mostly cloudy, with a high near 52. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
Partly cloudy, with a low around 34.
Thursday
Mostly sunny, with a high near 51.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.2°N 119.78°W (Elev. 646 ft)
4:20 am PST Jan 30, 2026
6am PST Jan 30, 2026-6pm PST Feb 5, 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