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

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Hazardous Weather Conditions

Current conditions at

Stampede Pass (KSMP)

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

light rain,mist

38°F

3°C

Humidity 100%
Wind Speed W 10 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 38°F (3°C)
Visibility 1.00 mi
Wind Chill31°F (-1°C)
Last update 07 Dec 11:14 PM PST
Extended Forecast for

Snoqualmie Pass WA

  • Tonight

    Tonight: Rain, mainly before 4am. Low around 35. West wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Rain

  • Monday

    Monday: Rain, mainly after 7am. The rain could be heavy at times. High near 44. Southwest wind 5 to 8 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 44 °F

    Heavy Rain

  • Monday Night

    Monday Night: Rain before 10pm, then snow, possibly mixed with rain. The rain could be heavy at times. Low around 32. West wind 9 to 11 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Rain/Snow

  • Tuesday

    Tuesday: Rain, possibly mixed with snow, becoming all rain after 1pm. High near 40. Light west wind. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times. Low around 34. Calm wind becoming southwest around 5 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    Low: 34 °F

    Heavy Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times. High near 42. Chance of precipitation is 100%.

    High: 42 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain. The rain could be heavy at times. Low around 36. Chance of precipitation is 80%.

    Low: 36 °F

    Heavy Rain

  • Thursday

    Thursday: Rain likely, possibly mixed with snow, becoming all rain after 10am. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.

    High: 41 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

Detailed Forecast

Tonight
Rain, mainly before 4am. Low around 35. West wind around 11 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain, mainly after 7am. The rain could be heavy at times. High near 44. Southwest wind 5 to 8 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Monday Night
Rain before 10pm, then snow, possibly mixed with rain. The rain could be heavy at times. Low around 32. West wind 9 to 11 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Tuesday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 40. Light west wind. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tuesday Night
Rain. The rain could be heavy at times. Low around 34. Calm wind becoming southwest around 5 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Wednesday
Rain. The rain could be heavy at times. High near 42. Chance of precipitation is 100%.
Wednesday Night
Rain. The rain could be heavy at times. Low around 36. Chance of precipitation is 80%.
Thursday
Rain likely, possibly mixed with snow, becoming all rain after 10am. Mostly cloudy, with a high near 41. Chance of precipitation is 70%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Friday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 44.
Friday Night
A chance of rain. Mostly cloudy, with a low around 37.
Saturday
Rain likely. Partly sunny, with a high near 43.
Saturday Night
Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 35.
Sunday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Snoqualmie Pass WA
 47.43°N 121.41°W (Elev. 3087 ft)
Last Update:
10:37 pm PST Dec 7, 2025
Forecast Valid:
11pm PST Dec 7, 2025-6pm PST Dec 14, 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