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 West Coast through 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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8 Miles N Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Tonight

Heavy Rain Chance for Measurable Precipitation 100%

Heavy
Rain

Low: 43 °F

Sunday

Rain Chance for Measurable Precipitation 100%

Rain

High: 43 °FFalling Temperatures

Sunday
Night

Snow Chance for Measurable Precipitation 90%

Snow

Low: 35 °F

Monday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 39 °F

Monday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 34 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 40 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

Low: 30 °F

Wednesday

Snow

Snow

High: 34 °F

Wednesday
Night

Chance Snow

Chance
Snow

Low: 26 °F

Detailed Forecast

  • Tonight Rain. The rain could be heavy at times. Steady temperature around 43. Windy, with a west southwest wind 26 to 32 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
  • Sunday Rain. Temperature falling to around 39 by 4pm. Breezy, with a west wind 24 to 29 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
  • Sunday Night Snow. Low around 35. Breezy, with a west wind around 24 mph, with gusts as high as 32 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 39. West wind 5 to 11 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Monday Night A chance of rain and snow, mainly after 10pm. Mostly cloudy, with a low around 34. West wind 3 to 5 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Tuesday Rain likely, mainly after 10am. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
  • Tuesday Night A chance of rain. Cloudy, with a low around 30. Chance of precipitation is 50%.
  • Wednesday Snow. Cloudy, with a high near 34. Breezy.
  • Wednesday Night A chance of snow showers. Mostly cloudy, with a low around 26. Blustery.
  • Christmas Day A chance of snow showers. Partly sunny, with a high near 31.
  • Thursday Night A slight chance of snow showers. Mostly cloudy, with a low around 25.
  • Friday Partly sunny, with a high near 33.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 25.
  • Saturday A chance of snow. Partly sunny, with a high near 33.