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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

NCSB (NCSW1)

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

NA

34°F

1°C

Humidity 98%
Wind Speed NNW 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 07 Dec 02:06 PM PST
Extended Forecast for

9 Miles N Winthrop WA

  • This Afternoon

    This Afternoon: A 50 percent chance of snow. Mostly cloudy, with a high near 33. Light northeast wind. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 33 °F

    Chance Snow

  • Tonight

    Tonight: Snow likely, mainly between 1am and 4am. Mostly cloudy, with a low around 33. East wind 3 to 5 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance Snow
    then Snow
    Likely

  • Monday

    Monday: Snow likely before 10am, then rain, possibly mixed with snow between 10am and 2pm, then rain after 2pm. High near 37. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 37 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 1am, then rain likely, possibly mixed with snow. Low around 33. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then snow likely after 4pm. Partly sunny, with a high near 37. West wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Snow likely before 10pm, then rain and snow. Low around 34. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 34 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow, becoming all rain after 1pm. High near 39. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.

    High: 37 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Mostly cloudy, with a high near 33. Light northeast wind. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow likely, mainly between 1am and 4am. Mostly cloudy, with a low around 33. East wind 3 to 5 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Snow likely before 10am, then rain, possibly mixed with snow between 10am and 2pm, then rain after 2pm. High near 37. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
Rain before 1am, then rain likely, possibly mixed with snow. Low around 33. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday
A chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then snow likely after 4pm. Partly sunny, with a high near 37. West wind 5 to 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow likely before 10pm, then rain and snow. Low around 34. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Rain and snow, becoming all rain after 1pm. High near 39. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Saturday
Rain and snow likely. Partly sunny, with a high near 40. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles N Winthrop WA
 48.61°N 120.19°W (Elev. 3524 ft)
Last Update:
1:21 pm PST Dec 7, 2025
Forecast Valid:
2pm PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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