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

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

34°F

1°C

Humidity 97%
Wind Speed NW 4 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill30°F (-1°C)
Last update 09 Dec 04:06 AM PST
Extended Forecast for

10 Miles ESE Twisp WA

  • Today

    Today: A 30 percent chance of snow, mainly after 4pm. Mostly cloudy, with a high near 37. West wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 37 °F

    Partly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: Snow before midnight, then rain, possibly mixed with snow. Low around 29. Light and variable wind becoming west around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 29 °F

    Snow then
    Rain/Snow

  • Wednesday

    Wednesday: Rain likely. Mostly cloudy, with a high near 41. West wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 32. West wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, possibly mixed with snow, mainly before 10am. Partly sunny, with a high near 40. West wind around 7 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A slight chance of rain and snow before 10pm. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

Detailed Forecast

Today
A 30 percent chance of snow, mainly after 4pm. Mostly cloudy, with a high near 37. West wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow before midnight, then rain, possibly mixed with snow. Low around 29. Light and variable wind becoming west around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Rain likely. Mostly cloudy, with a high near 41. West wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 32. West wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain likely, possibly mixed with snow, mainly before 10am. Partly sunny, with a high near 40. West wind around 7 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
A slight chance of rain and snow before 10pm. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Friday
A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 40.
Friday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 30.
Saturday
Mostly cloudy, with a high near 36.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
A chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Monday
Rain and snow likely. Mostly cloudy, with a high near 37. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles ESE Twisp WA
 48.3°N 119.92°W (Elev. 3750 ft)
Last Update:
2:52 am PST Dec 9, 2025
Forecast Valid:
4am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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