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 100%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 07 Dec 03:06 PM PST
Extended Forecast for

10 Miles SSW Twisp WA

  • This Afternoon

    This Afternoon: A 50 percent chance of snow. Partly sunny, with a high near 33. North wind around 5 mph becoming southeast. Total daytime snow accumulation of less than one inch possible.

    High: 33 °F

    Chance Snow

  • Tonight

    Tonight: A 40 percent chance of snow between 10pm and 4am. Mostly cloudy, with a steady temperature around 34. Southeast wind around 6 mph becoming north after midnight. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Chance Snow

  • Monday

    Monday: Rain, possibly mixed with snow, becoming all rain after 4pm. High near 37. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am. Low around 32. West wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Snow, mainly after 4pm. High near 35. West wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Chance Snow
    then Snow

  • Tuesday Night

    Tuesday Night: Snow. Low around 33. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 33 °F

    Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain. High near 37. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Thursday

    Thursday: A 40 percent chance of snow. Partly sunny, with a high near 34.

    High: 34 °F

    Chance Snow

Detailed Forecast

This Afternoon
A 50 percent chance of snow. Partly sunny, with a high near 33. North wind around 5 mph becoming southeast. Total daytime snow accumulation of less than one inch possible.
Tonight
A 40 percent chance of snow between 10pm and 4am. Mostly cloudy, with a steady temperature around 34. Southeast wind around 6 mph becoming north after midnight. New snow accumulation of less than a half inch possible.
Monday
Rain, possibly mixed with snow, becoming all rain after 4pm. High near 37. Light and variable wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Rain before 10pm, then rain and snow likely between 10pm and 1am, then snow likely after 1am. Low around 32. West wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday
Snow, mainly after 4pm. High near 35. West wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Tuesday Night
Snow. Low around 33. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday
Snow, possibly mixed with rain. High near 37. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain and snow before 7pm, then a chance of snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Thursday
A 40 percent chance of snow. Partly sunny, with a high near 34.
Thursday Night
A chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SSW Twisp WA
 48.23°N 120.18°W (Elev. 4573 ft)
Last Update:
2:48 pm PST Dec 7, 2025
Forecast Valid:
4pm PST Dec 7, 2025-6pm PST Dec 14, 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