Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Stampede Pass (KSMP)

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

rain,fog

42°F

6°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 42°F (6°C)
Visibility 0.50 mi
Last update 10 Dec 01:56 AM PST
Extended Forecast for

Snoqualmie Pass WA

Flood Watch December 10, 02:04am until December 12, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 10, 02:04am until December 12, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Overnight

    Low: 34 °F

    Heavy Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times.  High near 47. West wind 6 to 11 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.

    High: 47 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain before 4am, then rain, possibly mixed with snow. The rain could be heavy at times.  Low around 37. West wind 7 to 10 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 37 °F

    Heavy Rain
    then
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow, becoming all rain after 10am.  High near 43. West wind around 6 mph.  Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    then Rain

  • Thursday Night

    Thursday Night: Rain.  Low around 38. Calm wind.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain

  • Friday

    Friday: Rain likely, mainly before 4pm.  Mostly cloudy, with a high near 44. Chance of precipitation is 70%.

    High: 44 °F

    Rain Likely

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before 10pm.  Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after 4pm.  Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain

Detailed Forecast

Overnight
Rain. The rain could be heavy at times. Low around 34. South wind around 5 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Wednesday
Rain. The rain could be heavy at times. High near 47. West wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 3 and 4 inches possible.
Wednesday Night
Rain before 4am, then rain, possibly mixed with snow. The rain could be heavy at times. Low around 37. West wind 7 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Rain, possibly mixed with snow, becoming all rain after 10am. High near 43. West wind around 6 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday Night
Rain. Low around 38. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 44. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 36.
Saturday
A 30 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 48.
Saturday Night
Rain likely, mainly after 10pm. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Sunday
Rain. Mostly cloudy, with a high near 42.
Sunday Night
Rain likely. Mostly cloudy, with a low around 37.
Monday
Rain. Mostly cloudy, with a high near 44.
Monday Night
Rain, possibly mixed with snow. Mostly cloudy, with a low around 35.
Tuesday
Rain, possibly mixed with snow. Mostly cloudy, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
Snoqualmie Pass WA
 47.43°N 121.41°W (Elev. 3087 ft)
1:31 am PST Dec 10, 2025
2am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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