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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Current conditions at

NCSB (NCSW1)

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

NA

28°F

-2°C

Humidity 100%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 25 Dec 05:06 AM PST
Extended Forecast for

4 Miles SSW Twisp WA

  • Christmas Day

    Christmas Day: Snow, mainly between 7am and 4pm. High near 28. Northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 28 °F

    Snow

  • Tonight

    Tonight: A chance of snow before 1am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 25. Light south wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow

  • Friday

    Friday: Snow likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 26. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 26 °F

    Snow Likely

  • Friday Night

    Friday Night: A 50 percent chance of snow before 10pm. Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 23. Northwest wind 5 to 7 mph.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy

Detailed Forecast

Christmas Day
Snow, mainly between 7am and 4pm. High near 28. Northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
A chance of snow before 1am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 25. Light south wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday
Snow likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 26. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday Night
A 50 percent chance of snow before 10pm. Partly cloudy, with a low around 16. West wind around 10 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Saturday
Mostly sunny, with a high near 23. Northwest wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 14.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
Mostly cloudy, with a high near 27.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly cloudy, with a high near 30.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A 20 percent chance of snow. Mostly cloudy, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Twisp WA
 48.31°N 120.17°W (Elev. 4193 ft)
Last Update:
2:17 am PST Dec 25, 2025
Forecast Valid:
5am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation