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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Overcast

27°F

-3°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 25°F (-4°C)
Visibility 7.00 mi
Last update 01 Jan 07:55 AM PST
Extended Forecast for

2 Miles ENE Sunnyside WA

Winter Weather Advisory January 1, 10:00am until January 2, 04:00am
Air Stagnation Advisory January 1, 08:06am until January 1, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 1, 08:06am until January 1, 12:00pm

    NOW until 12:00pm Thu

    Air Stagnation Advisory

  • New Year's Day

    High: 34 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A 20 percent chance of rain. Cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Slight Chance
    Rain

  • Friday

    Friday: A 20 percent chance of rain. Mostly cloudy, with a high near 43. Calm wind.

    High: 43 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 20 percent chance of rain. Mostly cloudy, with a high near 49.

    High: 49 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

Detailed Forecast

New Year's Day
A 20 percent chance of rain. Snow level rising to 5900 feet. Cloudy, with a high near 34. Calm wind.
Tonight
A 20 percent chance of rain. Cloudy, with a low around 29. Calm wind.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 43. Calm wind.
Friday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 32. Calm wind.
Saturday
A 20 percent chance of rain. Mostly cloudy, with a high near 45. Calm wind.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Sunday
A 20 percent chance of rain. Mostly cloudy, with a high near 49.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Monday
A 20 percent chance of rain. Partly sunny, with a high near 47.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 31.
Tuesday
A slight chance of rain. Mostly cloudy, with a high near 46.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 32.
Wednesday
A slight chance of rain. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Sunnyside WA
 46.33°N 119.97°W (Elev. 758 ft)
Last Update:
7:21 am PST Jan 1, 2026
Forecast Valid:
8am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation