Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

32°F

0°C

Humidity 85%
Wind Speed W 3 MPH
Barometer 30.55 in (1034.54 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 19 Jan 01:55 PM PST
Extended Forecast for

4 Miles W Sunnyside WA

Air Stagnation Advisory January 19, 02:23pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 02:23pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • M.L.King Day

    High: 39 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy freezing fog after 10pm. Mostly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Patchy
    Freezing Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 38. Calm wind.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy freezing fog after 1am. Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Clear
    then Patchy
    Freezing Fog

  • Wednesday

    Wednesday: Patchy freezing fog before 10am. Mostly sunny, with a high near 37. Calm wind.

    High: 37 °F

    Patchy
    Freezing Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy freezing fog after 4am. Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy
    then Patchy
    Freezing Fog

  • Thursday

    Thursday: Patchy freezing fog before 10am. Partly sunny, with a high near 37.

    High: 37 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

M.L.King Day
Mostly cloudy, with a high near 39. Calm wind.
Tonight
Patchy freezing fog after 10pm. Mostly cloudy, with a low around 24. Calm wind.
Tuesday
Partly sunny, with a high near 38. Calm wind.
Tuesday Night
Patchy freezing fog after 1am. Partly cloudy, with a low around 23. Calm wind.
Wednesday
Patchy freezing fog before 10am. Mostly sunny, with a high near 37. Calm wind.
Wednesday Night
Patchy freezing fog after 4am. Partly cloudy, with a low around 22.
Thursday
Patchy freezing fog before 10am. Partly sunny, with a high near 37.
Thursday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 39.
Friday Night
Mostly clear, with a low around 23.
Saturday
Partly sunny, with a high near 38.
Saturday Night
Mostly cloudy, with a low around 26.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 41.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Sunnyside WA
 46.33°N 120.1°W (Elev. 801 ft)
2:06 pm PST Jan 19, 2026
2pm PST Jan 19, 2026-6pm PST Jan 25, 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