Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

Sunnyside Municipal Airport (K1S5)

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

Clear

33°F

1°C

Humidity 97%
Wind Speed N 0 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 25 Dec 12:15 AM PST
Extended Forecast for

2 Miles ENE Sunnyside WA

  • Overnight

    Overnight: A 10 percent chance of rain after 4am.  Patchy fog between 1am and 4am.  Otherwise, mostly cloudy, with a low around 29. North wind around 5 mph becoming calm.

    Low: 29 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Christmas Day

    Christmas Day: A 50 percent chance of rain, mainly between 7am and 1pm.  Patchy fog between 7am and 10am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 44. Light northwest wind.  New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A 40 percent chance of rain.  Patchy fog.  Otherwise, mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: A 40 percent chance of rain, mainly before 10am.  Mostly cloudy, with a high near 46. Southwest wind 5 to 10 mph.

    High: 46 °F

    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm.  Snow level 1800 feet lowering to 900 feet after midnight . Partly cloudy, with a low around 26. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 26 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am.  Otherwise, partly sunny, with a high near 36.

    High: 36 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
A 10 percent chance of rain after 4am. Patchy fog between 1am and 4am. Otherwise, mostly cloudy, with a low around 29. North wind around 5 mph becoming calm.
Christmas Day
A 50 percent chance of rain, mainly between 7am and 1pm. Patchy fog between 7am and 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 44. Light northwest wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 40 percent chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 31. Calm wind.
Friday
A 40 percent chance of rain, mainly before 10am. Mostly cloudy, with a high near 46. Southwest wind 5 to 10 mph.
Friday Night
A 20 percent chance of rain before 10pm. Snow level 1800 feet lowering to 900 feet after midnight . Partly cloudy, with a low around 26. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 42.
Saturday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 22.
Sunday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 36.
Sunday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 22.
Monday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 36.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 23.
Tuesday
Patchy fog. Otherwise, partly sunny, with a high near 38.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 23.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Sunnyside WA
 46.33°N 119.97°W (Elev. 758 ft)
9:22 pm PST Dec 24, 2025
12am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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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