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

Today

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 40 °F

Tonight

Rain Chance for Measurable Precipitation 100%

Rain

Low: 35 °FRising Temperatures

Sunday

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 42 °F

Sunday
Night

Snow Chance for Measurable Precipitation 90%

Snow

Low: 34 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 42 °F

Monday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 32 °F

Tuesday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 37 °F

Tuesday
Night

Snow Likely

Snow
Likely

Low: 28 °F

Wednesday

Snow Likely

Snow
Likely

High: 33 °F

Detailed Forecast

  • Today Snow before 10am, then rain and snow. The rain and snow could be heavy at times. High near 40. South wind 15 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 3 to 7 inches possible.
  • Tonight Rain. The rain could be heavy at times. Temperature rising to around 39 by 10pm. 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 42. 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 25 to 32 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
  • Monday A 40 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near 42. West wind 6 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 likely. Cloudy, with a high near 37. Chance of precipitation is 60%.
  • Tuesday Night Snow likely. Cloudy, with a low around 28.
  • Wednesday Snow likely. Cloudy, with a high near 33. Breezy.
  • Wednesday Night Snow showers likely. Mostly cloudy, with a low around 26. Blustery.
  • Christmas Day A chance of snow showers. Partly sunny, with a high near 30.
  • Thursday Night A slight chance of snow showers. Mostly cloudy, with a low around 25.
  • Friday Mostly sunny, with a high near 33.