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

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

16°F

-9°C

Humidity 86%
Wind Speed NW 3 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Last update 01 Jan 09:06 AM PST
Extended Forecast for

Winthrop WA

Air Stagnation Advisory until January 1, 12:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory until January 1, 12:00pm

    NOW until 12:00pm Thu

    Air Stagnation Advisory

  • New Year's Day

    High: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tonight

    Tonight: A 50 percent chance of snow, mainly after 7pm. Cloudy, with a low around 25. Calm wind. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 32. Calm wind. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow and freezing rain before 4am, then rain and snow likely, possibly mixed with freezing rain. Mostly cloudy, with a low around 30. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 30 °F

    Wintry Mix
    Likely

  • Saturday

    Saturday: Rain and snow likely before 10am, then rain. High near 37. Calm wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 37 °F

    Rain/Snow
    then Rain

  • Saturday Night

    Saturday Night: Rain likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.

    Low: 32 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 38. Chance of precipitation is 70%.

    High: 38 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Rain

Detailed Forecast

New Year's Day
A 20 percent chance of snow after 1pm. Cloudy, with a high near 28. Calm wind.
Tonight
A 50 percent chance of snow, mainly after 7pm. Cloudy, with a low around 25. Calm wind. New snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 32. Calm wind. New snow accumulation of less than a half inch possible.
Friday Night
A chance of snow and freezing rain before 4am, then rain and snow likely, possibly mixed with freezing rain. Mostly cloudy, with a low around 30. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday
Rain and snow likely before 10am, then rain. High near 37. Calm wind. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday Night
Rain likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Sunday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 38. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 27.
Monday
A chance of rain and snow, mainly before 4pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Monday Night
A slight chance of rain and snow before 10pm. Partly cloudy, with a low around 24. Chance of precipitation is 20%.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winthrop WA
 48.48°N 120.19°W (Elev. 1801 ft)
Last Update:
9:03 am PST Jan 1, 2026
Forecast Valid:
9am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation