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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3 Miles NNE Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

This
Afternoon

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 49 °F

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: 37 °F

Monday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 45 °F

Monday
Night

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

Low: 35 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 43 °F

Tuesday
Night

Rain Chance for Measurable Precipitation 80%

Rain

Low: 30 °F

Wednesday

Snow Chance for Measurable Precipitation 80%

Snow

High: 35 °F

Wednesday
Night

Chance Snow

Chance
Snow

Low: 26 °F

Christmas
Day

Chance Snow

Chance
Snow

High: 34 °F

Detailed Forecast

  • This Afternoon Rain and snow. High near 49. Breezy, with a west wind around 24 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
  • Tonight Snow, mainly before 4am. Low around 37. Breezy, with a west wind 14 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
  • Monday A chance of snow before 4pm, then a slight chance of rain and snow. Mostly cloudy, with a high near 45. West northwest wind 5 to 10 mph becoming light west in the morning. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Monday Night A 40 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 35. Light west wind. New precipitation amounts of less than a tenth of an inch possible.
  • Tuesday Rain likely, mainly after 10am. Mostly cloudy, with a high near 43. Southwest wind around 10 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Tuesday Night Rain. Low around 30. Chance of precipitation is 80%.
  • Wednesday Snow. High near 35. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
  • Wednesday Night A chance of snow showers. Mostly cloudy, with a low around 26.
  • Christmas Day A chance of snow showers. Mostly cloudy, with a high near 34.
  • Thursday Night A chance of snow showers. Mostly cloudy, with a low around 25.
  • Friday Partly sunny, with a high near 35.
  • Friday Night Mostly cloudy, with a low around 26.
  • Saturday A chance of snow. Mostly cloudy, with a high near 35.