Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

29°F

-2°C

Humidity 85%
Wind Speed NE 3 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 28 Jan 05:35 AM PST
Extended Forecast for

Prosser WA

  • Today

    Today: A 20 percent chance of rain after 1pm.  Increasing clouds, with a high near 46. Calm wind becoming south around 5 mph in the morning.

    High: 46 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 1am.  Cloudy, with a low around 35. Light east wind.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A 50 percent chance of rain before 10am.  Cloudy, with a high near 47. Light southeast wind.  New precipitation amounts of less than a tenth of an inch possible.

    High: 47 °F

    Chance Rain
    then Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of rain.  Cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain.  Cloudy, with a high near 46. Light and variable wind.

    High: 46 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 33.

    Low: 33 °F

    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 47.

    High: 47 °F

    Mostly Cloudy

Detailed Forecast

Today
A 20 percent chance of rain after 1pm. Increasing clouds, with a high near 46. Calm wind becoming south around 5 mph in the morning.
Tonight
A 40 percent chance of rain, mainly after 1am. Cloudy, with a low around 35. Light east wind.
Thursday
A 50 percent chance of rain before 10am. Cloudy, with a high near 47. Light southeast wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of rain. Cloudy, with a low around 36. Calm wind.
Friday
A 20 percent chance of rain. Cloudy, with a high near 46. Light and variable wind.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Mostly cloudy, with a high near 48.
Saturday Night
Cloudy, with a low around 33.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 35.
Monday
Partly sunny, with a high near 53.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Prosser WA
 46.22°N 119.79°W (Elev. 715 ft)
4:21 am PST Jan 28, 2026
5am PST Jan 28, 2026-6pm PST Feb 3, 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