National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. on Saturday

Another Pacific system will impact the West Coast today. Heavy rainfall could lead to flash flooding, river and small stream flooding as well as mudslides and debris flows, especially over burn scars. Strong winds and heavy elevation 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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Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

This
Afternoon

Snow Chance for Measurable Precipitation 100%

Snow

High: 39 °F

Tonight

Rain Chance for Measurable Precipitation 100%

Rain

Low: 36 °F

Sunday

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 39 °F

Sunday
Night

Snow Chance for Measurable Precipitation 90%

Snow

Low: 34 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 40 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 32 °F

Tuesday

Rain/Snow Likely Chance for Measurable Precipitation 60%

Rain/Snow
Likely

High: 36 °F

Tuesday
Night

Snow Likely

Snow
Likely

Low: 28 °F

Wednesday

Snow Likely

Snow
Likely

High: 32 °F

Detailed Forecast

  • This Afternoon Snow. High near 39. South wind around 18 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 5 inches possible.
  • Tonight Rain. The rain could be heavy at times. Low around 36. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
  • Sunday Rain and snow. High near 39. Windy, with a west wind 32 to 38 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
  • Sunday Night Snow, mainly before 4am. Low around 34. Windy, with a west wind 26 to 32 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
  • Monday A 40 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near 40. West wind 7 to 14 mph, with gusts as high as 18 mph. Little or no snow accumulation expected.
  • Monday Night A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 32. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Tuesday Rain and snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
  • Tuesday Night Snow likely. Cloudy, with a low around 28.
  • Wednesday Snow likely. Cloudy, with a high near 32. Breezy.
  • Wednesday Night Snow showers likely. Mostly cloudy, with a low around 24. Blustery.
  • Christmas Day A chance of snow showers. Partly sunny, with a high near 28.
  • Thursday Night A slight chance of snow showers. Mostly cloudy, with a low around 24.
  • Friday Mostly sunny, with a high near 31.