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 >

Current conditions at

Stampede Pass (KSMP)

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

Mist

37°F

3°C

Humidity 100%
Wind Speed W 10 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Wind Chill30°F (-1°C)
Last update 07 Dec 04:06 PM PST
Extended Forecast for

5 Miles ENE Snoqualmie Pass WA

  • This Afternoon

    This Afternoon: Snow. High near 37. West wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.

    High: 37 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 4am. Low around 32. Breezy, with a west wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Snow and
    Breezy

  • Monday

    Monday: Rain, possibly mixed with snow, becoming all rain after 1pm. The rain could be heavy at times. High near 41. Southwest wind 11 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Monday Night

    Monday Night: Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then snow after 1am. The rain and snow could be heavy at times. Low around 30. Breezy, with a west wind 24 to 26 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 30 °F

    Rain/Snow and
    Breezy

  • Tuesday

    Tuesday: Snow. The snow could be heavy at times. High near 36. West wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 36 °F

    Heavy Snow

  • Tuesday Night

    Tuesday Night: Snow before 10pm, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Low around 32. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 32 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow. The rain could be heavy at times. High near 38. Breezy. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 38 °F

    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain and snow. The rain could be heavy at times. Low around 33. Chance of precipitation is 80%.

    Low: 33 °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
Snow. High near 37. West wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before 4am. Low around 32. Breezy, with a west wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Rain, possibly mixed with snow, becoming all rain after 1pm. The rain could be heavy at times. High near 41. Southwest wind 11 to 14 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday Night
Rain before 10pm, then rain, possibly mixed with snow between 10pm and 1am, then snow after 1am. The rain and snow could be heavy at times. Low around 30. Breezy, with a west wind 24 to 26 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Tuesday
Snow. The snow could be heavy at times. High near 36. West wind 7 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Tuesday Night
Snow before 10pm, then rain, possibly mixed with snow. The rain and snow could be heavy at times. Low around 32. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Wednesday
Rain and snow. The rain could be heavy at times. High near 38. Breezy. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Rain and snow. The rain could be heavy at times. Low around 33. 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 and snow likely. Mostly cloudy, with a low around 34.
Friday
Rain and snow likely. Mostly cloudy, with a high near 39.
Friday Night
A chance of rain. Mostly cloudy, with a low around 34.
Saturday
Rain and snow likely. Mostly cloudy, with a high near 39.
Saturday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Sunday
Snow likely. Mostly cloudy, with a high near 36.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ENE Snoqualmie Pass WA
 47.44°N 121.32°W (Elev. 5354 ft)
Last Update:
3:20 pm PST Dec 7, 2025
Forecast Valid:
4pm PST Dec 7, 2025-6pm PST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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