Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

26°F

-3°C

Humidity 87%
Wind Speed NNW 0 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 19 Jan 04:06 PM PST
Extended Forecast for

10 Miles SW Twisp WA

Air Stagnation Advisory January 19, 04:37pm until January 20, 04:00pm
Click here for hazard details and duration
Air Stagnation Advisory
  •  
    Air Stagnation Advisory January 19, 04:37pm until January 20, 04:00pm

    NOW until 4:00pm Tue

    Air Stagnation Advisory

  • Tonight

    Low: 27 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 36. Light and variable wind.

    High: 36 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 23. Light west wind.

    Low: 23 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. Light and variable wind.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Tonight
Increasing clouds, with a low around 27. Calm wind becoming west around 5 mph after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 36. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 23. Light west wind.
Wednesday
Mostly sunny, with a high near 32. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 23. Calm wind.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Sunny, with a high near 31.
Friday Night
Mostly clear, with a low around 20.
Saturday
A 20 percent chance of snow after 10am. Mostly sunny, with a high near 29.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 21.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 30.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 25.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SW Twisp WA
 48.28°N 120.29°W (Elev. 4596 ft)
3:11 pm PST Jan 19, 2026
4pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database