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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Stampede Pass (KSMP)

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

Mostly Cloudy

32°F

0°C

Humidity 100%
Wind Speed W 8 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 32°F (0°C)
Visibility 8.00 mi
Wind Chill25°F (-4°C)
Last update 09 Dec 09:26 AM PST
Extended Forecast for

Snoqualmie Pass WA

Flood Watch December 9, 09:36am until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 9, 09:36am until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Today

    High: 40 °F

    Slight Chance
    Rain/Snow
    then
    Rain/Snow

  • Tonight

    Tonight: Rain, possibly mixed with snow, becoming all rain after 7pm. The rain could be heavy at times. Temperature rising to around 46 by 4am. Light and variable wind becoming west 5 to 7 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 37 °F⇑

    Rain/Snow
    then Heavy
    Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times. High near 48. West wind 7 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 48 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain. The rain could be heavy at times. Low around 41. West wind 6 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 41 °F

    Heavy Rain

  • Thursday

    Thursday: Rain. The rain could be heavy at times. High near 45. West wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.

    High: 45 °F

    Heavy Rain

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

    Low: 40 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly before 10am. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Today
A slight chance of rain and snow before 1pm, then rain between 1pm and 4pm, then rain, possibly mixed with snow after 4pm. High near 40. Light and variable wind. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Rain, possibly mixed with snow, becoming all rain after 7pm. The rain could be heavy at times. Temperature rising to around 46 by 4am. Light and variable wind becoming west 5 to 7 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday
Rain. The rain could be heavy at times. High near 48. West wind 7 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday Night
Rain. The rain could be heavy at times. Low around 41. West wind 6 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Thursday
Rain. The rain could be heavy at times. High near 45. West wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Friday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 47. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
Rain likely, mainly after 4pm. Partly sunny, with a high near 47. Chance of precipitation is 60%.
Saturday Night
Rain. Mostly cloudy, with a low around 37.
Sunday
Rain. Mostly cloudy, with a high near 42.
Sunday Night
Rain. Mostly cloudy, with a low around 37.
Monday
Rain. Mostly cloudy, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Snoqualmie Pass WA
 47.39°N 121.4°W (Elev. 2759 ft)
Last Update:
9:15 am PST Dec 9, 2025
Forecast Valid:
9am PST Dec 9, 2025-6pm PST Dec 15, 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