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.

Overcast

37°F

3°C

Humidity 100%
Wind Speed W 9 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 37°F (3°C)
Visibility 7.00 mi
Wind Chill30°F (-1°C)
Last update 07 Dec 03:09 PM PST
Extended Forecast for

6 Miles S Snoqualmie Pass WA

  • This Afternoon

    This Afternoon: Rain. High near 38. West wind around 8 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 38 °F

    Rain

  • Tonight

    Tonight: Rain before 10pm, then rain likely, possibly mixed with snow. Low around 34. West wind 7 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow

  • Monday

    Monday: Rain, mainly after 7am. The rain could be heavy at times. High near 42. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.

    High: 42 °F

    Heavy Rain

  • Monday Night

    Monday Night: Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. The rain could be heavy at times. Low around 32. West wind around 16 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Tuesday

    Tuesday: Rain, possibly mixed with snow. High near 36. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Low around 33. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    then Heavy
    Rain

  • Wednesday

    Wednesday: Rain. The rain could be heavy at times. High near 39. Chance of precipitation is 100%.

    High: 39 °F

    Heavy Rain

  • Wednesday Night

    Wednesday Night: Rain, possibly mixed with snow. The rain could be heavy at times. Low around 34. Chance of precipitation is 80%.

    Low: 34 °F

    Rain/Snow

  • Thursday

    Thursday: Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 37. Chance of precipitation is 70%.

    High: 37 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Rain. High near 38. West wind around 8 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain before 10pm, then rain likely, possibly mixed with snow. Low around 34. West wind 7 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Rain, mainly after 7am. The rain could be heavy at times. High near 42. Light southwest wind becoming west 5 to 9 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
Monday Night
Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then rain after 1am. The rain could be heavy at times. Low around 32. West wind around 16 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Tuesday
Rain, possibly mixed with snow. High near 36. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Tuesday Night
Rain, possibly mixed with snow, becoming all rain after 10pm. The rain could be heavy at times. Low around 33. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday
Rain. The rain could be heavy at times. High near 39. Chance of precipitation is 100%.
Wednesday Night
Rain, possibly mixed with snow. The rain could be heavy at times. Low around 34. Chance of precipitation is 80%.
Thursday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 37. Chance of precipitation is 70%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 36.
Friday
A chance of rain. Mostly cloudy, with a high near 41.
Friday Night
A chance of rain. Mostly cloudy, with a low around 35.
Saturday
Rain likely. Partly sunny, with a high near 40.
Saturday Night
Rain likely, possibly mixed with snow. Mostly cloudy, with a low around 34.
Sunday
Rain likely, possibly mixed with snow. Mostly cloudy, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles S Snoqualmie Pass WA
 47.32°N 121.38°W (Elev. 3629 ft)
Last Update:
3:16 pm PST Dec 7, 2025
Forecast Valid:
3pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation