Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

35°F

2°C

Humidity 97%
Wind Speed NNW 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 08 Dec 02:06 PM PST
Extended Forecast for

10 Miles NNE Winthrop WA

  • This Afternoon

    This Afternoon: Rain.  High near 40. Southwest wind around 7 mph.  Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Rain

  • Tonight

    Tonight: Rain, mixing with snow after midnight, then gradually ending.  Low around 32. West wind 9 to 11 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain then
    Rain/Snow

  • Tuesday

    Tuesday: Snow likely, possibly mixed with rain, becoming all snow after 5pm.  Increasing clouds, with a high near 38. West wind 5 to 10 mph becoming light and variable  in the afternoon.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Partly Sunny
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then rain, possibly mixed with snow.  Low around 33. Light southwest wind.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 33 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain.  High near 42. West wind around 7 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 42 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 10pm, then rain likely, possibly mixed with snow.  Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 36 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow likely before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and snow after 4pm.  Mostly cloudy, with a high near 40. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow, mainly before 4am.  Mostly cloudy, with a low around 34. Chance of precipitation is 40%.

    Low: 34 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A chance of rain and snow before 1pm, then a chance of rain.  Mostly cloudy, with a high near 41. Chance of precipitation is 30%.

    High: 41 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Rain. High near 40. Southwest wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mixing with snow after midnight, then gradually ending. Low around 32. West wind 9 to 11 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday
Snow likely, possibly mixed with rain, becoming all snow after 5pm. Increasing clouds, with a high near 38. West wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow before 10pm, then rain, possibly mixed with snow. Low around 33. Light southwest wind. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Rain. High near 42. West wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain likely before 10pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
Rain and snow likely before 1pm, then a chance of rain between 1pm and 4pm, then a chance of rain and snow after 4pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow, mainly before 4am. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Friday
A chance of rain and snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 36.
Saturday
A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 30%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNE Winthrop WA
 48.6°N 120.09°W (Elev. 3232 ft)
2:32 pm PST Dec 8, 2025
2pm PST Dec 8, 2025-6pm PST Dec 14, 2025
 
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Additional Resources

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