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 86%
Wind Speed N 0 MPH
Barometer 30.6 in (1036.24 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 19 Jan 01:15 AM PST
Extended Forecast for

2 Miles ENE Sunnyside WA

Air Stagnation Advisory January 19, 01:25am until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 01:25am until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Overnight

    Low: 25 °F

    Patchy
    Freezing Fog

  • M.L.King Day

    M.L.King Day: Patchy freezing fog before 10am. Mostly cloudy, with a high near 39. Calm wind.

    High: 39 °F

    Patchy
    Freezing Fog
    then Partly
    Sunny

  • Monday Night

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

    Low: 24 °F

    Patchy
    Freezing Fog

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 38. Calm wind.

    High: 38 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Patchy freezing fog after 10pm. Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Patchy
    Freezing Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am. Patchy freezing fog after 10pm.  Otherwise, mostly cloudy, with a low around 24.

    Low: 24 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Patchy freezing fog before 10am.  Otherwise, partly sunny, with a high near 38.

    High: 38 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog then
    Partly Sunny

Detailed Forecast

Overnight
Patchy freezing fog. Cloudy, with a low around 25. Calm wind.
M.L.King Day
Patchy freezing fog before 10am. Mostly cloudy, with a high near 39. Calm wind.
Monday Night
Patchy freezing fog after 10pm. Mostly cloudy, with a low around 24. Calm wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 38. Calm wind.
Tuesday Night
Patchy freezing fog after 10pm. Partly cloudy, with a low around 23. Calm wind.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Patchy fog after 4am. Patchy freezing fog after 10pm. Otherwise, mostly cloudy, with a low around 24.
Thursday
Patchy fog before 10am. Patchy freezing fog before 10am. Otherwise, partly sunny, with a high near 38.
Thursday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 24.
Friday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 39.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 26.
Sunday
A slight chance of rain and snow. Mostly cloudy, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Sunnyside WA
 46.33°N 119.97°W (Elev. 758 ft)
1:21 am PST Jan 19, 2026
1am 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