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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Stampede Pass (KSMP)

Lat: 47.27648°NLon: 121.33817°WElev: 3970.0ft.

NA

22°F

-6°C

Humidity 96%
Wind Speed NA 3 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 01 Jan 07:56 AM PST
Extended Forecast for

4 Miles SE Snoqualmie Pass WA

Winter Weather Advisory January 1, 09:03am until January 2, 04:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 1, 09:03am until January 2, 04:00am

    NOW until 4:00am Fri

    Winter Weather Advisory

  • New Year's Day

    High: 34 °F

    Snow Likely

  • Tonight

    Tonight: Snow likely. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Snow Likely

  • Friday

    Friday: Snow likely. Mostly cloudy, with a high near 38. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 38 °F

    Snow Likely

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 34. Light east wind. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 34 °F

    Snow Likely

  • Saturday

    Saturday: Snow likely. Mostly cloudy, with a high near 37. Southeast wind 3 to 5 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 37 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 33 °F

    Snow Likely

  • Sunday

    Sunday: Snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 36 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Snow likely. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.

    Low: 31 °F

    Snow Likely

Detailed Forecast

New Year's Day
Snow likely. Mostly cloudy, with a high near 34. Light east wind. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tonight
Snow likely. Cloudy, with a low around 30. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday
Snow likely. Mostly cloudy, with a high near 38. Calm wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
Snow likely. Mostly cloudy, with a low around 34. Light east wind. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
Snow likely. Mostly cloudy, with a high near 37. Southeast wind 3 to 5 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
Snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday
Snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
Snow likely. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.
Monday
Snow likely. Mostly cloudy, with a high near 35. Chance of precipitation is 60%.
Monday Night
Snow likely. Mostly cloudy, with a low around 29.
Tuesday
Snow likely. Mostly cloudy, with a high near 34.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 29.
Wednesday
Snow likely. Mostly cloudy, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Snoqualmie Pass WA
 47.37°N 121.36°W (Elev. 3458 ft)
Last Update:
8:31 am PST Jan 1, 2026
Forecast Valid:
9am PST Jan 1, 2026-6pm PST Jan 7, 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