National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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10 Miles NNE Chinook Pass WA

7 Day Forecast

For More Weather Information:

Seattle, WA Local Forecast Office

Late
Afternoon

Snow Chance for Measurable Precipitation 90%

Snow

High: 32 °F

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: 27 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 34 °F

Monday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 30 °F

Tuesday

Rain Chance for Measurable Precipitation 80%

Rain

High: 38 °F

Tuesday
Night

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: 27 °F

Wednesday

Snow Chance for Measurable Precipitation 90%

Snow

High: 32 °F

Wednesday
Night

Snow Likely

Snow
Likely

Low: 23 °F

Christmas
Day

Chance Snow

Chance
Snow

High: 26 °F

Detailed Forecast

  • Late Afternoon Snow showers. High near 32. West wind around 20 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.
  • Tonight Snow showers, mainly before 4am. Low around 27. West wind 16 to 20 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
  • Monday A 40 percent chance of snow showers before 10am. Partly sunny, with a high near 34. West northwest wind 5 to 9 mph becoming light north northwest in the afternoon. New snow accumulation of less than a half inch possible.
  • Monday Night A chance of rain and snow after 10pm. Mostly cloudy, with a low around 30. South wind 5 to 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
  • Tuesday Rain, mainly after 4pm. High near 38. South wind 9 to 14 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
  • Tuesday Night Rain before 10pm, then snow. Low around 27. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
  • Wednesday Snow. High near 32. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
  • Wednesday Night Snow showers likely. Mostly cloudy, with a low around 23.
  • Christmas Day A chance of snow showers. Partly sunny, with a high near 26.
  • Thursday Night Mostly cloudy, with a low around 23.
  • Friday Partly sunny, with a high near 28.
  • Friday Night A chance of snow showers. Mostly cloudy, with a low around 25.
  • Saturday A chance of snow showers. Partly sunny, with a high near 28.
  • Saturday Night A chance of snow showers. Mostly cloudy, with a low around 24.
  • Sunday A chance of snow showers. Mostly cloudy, with a high near 27.