National Weather Service United States Department of Commerce

Active pattern for the Pacific Northwest this week while a coastal low takes aim on the Northeast later this week

Thunderstorms with heavy rainfall is forecast to bring 5 to 7 inches of rainfall, with localized heavier amounts, to the Pacific Northwest throughout the week. Across the higher mountain elevations, measurable snow is likely. The Northeast will also be the focus of showers and thunderstorms beginning mid-week as a coastal low meanders of the Mid-Atlantic coast.
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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

Tonight

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: 43 °F

Tuesday

Rain/Snow Likely Chance for Measurable Precipitation 60%

Rain/Snow
Likely

High: 51 °F

Tuesday
Night

Rain Chance for Measurable Precipitation 100%

Rain

Low: 42 °F

Wednesday

Heavy Rain Chance for Measurable Precipitation 100%

Heavy
Rain

High: 54 °F

Wednesday
Night

Rain Chance for Measurable Precipitation 100%

Rain

Low: 43 °F

Thursday

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 50 °F

Thursday
Night

Snow Chance for Measurable Precipitation 80%

Snow

Low: 38 °F

Friday

Rain/Snow Likely

Rain/Snow
Likely

High: 55 °F

Friday
Night

Rain Likely

Rain
Likely

Low: 38 °F

Detailed Forecast

  • Tonight Rain showers before 11pm, then rain and snow showers likely. Low around 43. South southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
  • Tuesday Rain and snow showers likely before 11am, then a chance of snow. Mostly cloudy, with a high near 51. South wind around 8 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
  • Tuesday Night Rain. Low around 42. South wind 10 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
  • Wednesday Rain. The rain could be heavy at times. High near 54. South wind 18 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 inches possible.
  • Wednesday Night Rain. Low around 43. South southwest wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
  • Thursday Rain before 11am, then snow. High near 50. Chance of precipitation is 100%. Little or no snow accumulation expected.
  • Thursday Night Snow showers. Low around 38. Chance of precipitation is 80%. Little or no snow accumulation expected.
  • Friday Rain and snow likely. Cloudy, with a high near 55.
  • Friday Night Rain likely. Cloudy, with a low around 38.
  • Saturday A chance of rain and snow showers. Mostly cloudy, with a high near 57.
  • Saturday Night Snow showers likely. Cloudy, with a low around 35. Breezy.
  • Sunday Snow showers likely. Cloudy, with a high near 51.
  • Sunday Night A chance of snow showers. Mostly cloudy, with a low around 34.
  • Monday A chance of snow showers. Mostly cloudy, with a high near 48.