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

Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

NCSB (NCSW1)

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

NA

18°F

-8°C

Humidity 84%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 29 Dec 07:06 PM PST
Extended Forecast for

12 Miles SW Twisp 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

  • Tonight

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 31. Light northwest wind.

    High: 31 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Light west wind.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. Calm wind.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: A 10 percent chance of snow after 4pm. Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly after 10pm. Mostly cloudy, with a low around 19. New snow accumulation of less than a half inch possible.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly after 10am. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.

    High: 28 °F

    Snow Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. Calm wind becoming west around 5 mph.
Tuesday
Partly sunny, with a high near 31. Light northwest wind.
Tuesday Night
Partly cloudy, with a low around 20. Light west wind.
Wednesday
Mostly sunny, with a high near 32. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 21. Calm wind.
New Year's Day
A 10 percent chance of snow after 4pm. Partly sunny, with a high near 30.
Thursday Night
A 30 percent chance of snow, mainly after 10pm. Mostly cloudy, with a low around 19. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly after 10am. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 23. Chance of precipitation is 60%.
Saturday
A 50 percent chance of snow. Partly sunny, with a high near 31.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 19.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 28.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 23.
Monday
A 50 percent chance of snow. Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SW Twisp WA
 48.21°N 120.27°W (Elev. 4606 ft)
Last Update:
7:37 pm PST Dec 29, 2025
Forecast Valid:
7pm PST Dec 29, 2025-6pm PST Jan 5, 2026
 
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