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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3 Miles S Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Late
Afternoon

Heavy Rain Chance for Measurable Precipitation 100%

Heavy
Rain

High: 45 °F

Tonight

Heavy Rain Chance for Measurable Precipitation 100%

Heavy
Rain

Low: 44 °FRising Temperatures

Sunday

Rain Chance for Measurable Precipitation 100%

Rain

High: 50 °F

Sunday
Night

Rain Chance for Measurable Precipitation 90%

Rain

Low: 41 °F

Monday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 46 °F

Monday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 38 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 46 °F

Tuesday
Night

Rain Likely

Rain
Likely

Low: 34 °F

Wednesday

Rain/Snow

Rain/Snow

High: 41 °F

Detailed Forecast

  • Late Afternoon Rain. The rain could be heavy at times. High near 45. Southwest wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
  • Tonight Rain. The rain could be heavy at times. Temperature rising to around 48 by midnight. West southwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
  • Sunday Rain. High near 50. West wind 16 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
  • Sunday Night Rain. Low around 41. West wind 11 to 16 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
  • Monday A chance of rain and snow. Mostly cloudy, with a high near 46. West wind 5 to 7 mph becoming calm in the morning. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Monday Night A 30 percent chance of rain, mainly after 10pm. Mostly cloudy, with a low around 38.
  • Tuesday Rain likely, mainly after 10am. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
  • Tuesday Night Rain likely. Cloudy, with a low around 34.
  • Wednesday Rain and snow. Cloudy, with a high near 41.
  • Wednesday Night A chance of snow showers. Mostly cloudy, with a low around 30.
  • Christmas Day A chance of snow showers. Partly sunny, with a high near 39.
  • Thursday Night A slight chance of snow showers. Mostly cloudy, with a low around 30.
  • Friday Partly sunny, with a high near 39.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 28.
  • Saturday A chance of snow. Partly sunny, with a high near 39.