National Weather Service United States Department of Commerce

While moderate snow winds down in the Northeast, heavy rainfall will develop across the Northwest

Moderate snow will begin tapering of throughout Thanksgiving Day across New England as the responsible coast low moves off eastern Canada by Friday morning. A weakening front will move into the Pacific Northwest Thanksgiving morning and dissipate bringing light to moderate rain to the Northwest Coast and parts of Northern California and elevation snow through Friday morning.
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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 Chance for Measurable Precipitation 90%

Rain

Low: 38 °F

Thanksgiving
Day

Rain Chance for Measurable Precipitation 100%

Rain

High: 42 °F

Thursday
Night

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: 36 °F

Friday

Rain/Snow Chance for Measurable Precipitation 100%

Rain/Snow

High: 40 °F

Friday
Night

Snow Chance for Measurable Precipitation 100%

Snow

Low: 21 °F

Saturday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 21 °F

Saturday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 18 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 28 °F

Sunday
Night

Slight Chance Snow

Slight Chc
Snow

Low: 25 °F

Detailed Forecast

  • Tonight Rain. Low around 38. South wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
  • Thanksgiving Day Rain. High near 42. South southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
  • Thursday Night Rain and snow. Low around 36. South southwest wind around 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
  • Friday Rain and snow, becoming all snow after 10am. High near 40. Southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
  • Friday Night Snow. Low around 21. West wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
  • Saturday Snow showers likely, mainly before 10am. Mostly cloudy, with a high near 21. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
  • Saturday Night A 20 percent chance of snow showers before 10pm. Partly cloudy, with a low around 18.
  • Sunday Mostly sunny, with a high near 28.
  • Sunday Night A slight chance of snow. Mostly cloudy, with a low around 25.
  • Monday A chance of snow. Cloudy, with a high near 33.
  • Monday Night A chance of snow. Mostly cloudy, with a low around 21.
  • Tuesday A slight chance of snow. Partly sunny, with a high near 32.
  • Tuesday Night A slight chance of snow. Mostly cloudy, with a low around 29.
  • Wednesday A chance of snow. Mostly cloudy, with a high near 35.