National Weather Service United States Department of Commerce

East Coast winter storm forecast to impact Thanksgiving holiday travel

A storm system will develop off the coast of the Carolinas early Wednesday and strengthen as it moves rapidly up the East Coast Wednesday into early Thursday. Heavy snow is likely to begin in the central Appalachians early Wednesday morning, spreading northeast through the interior Mid-Atlantic into New England by Wednesday night. Winter Storm Watches are in effect for these areas.
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Current Conditions

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16 Miles NNW Cascade Locks OR

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Late
Afternoon

Rain Chance for Measurable Precipitation 90%

Rain

High: 45 °F

Tonight

Rain Chance for Measurable Precipitation 100%

Rain

Low: 40 °F

Tuesday

Rain Chance for Measurable Precipitation 100%

Rain

High: 48 °F

Tuesday
Night

Rain Chance for Measurable Precipitation 80%

Rain

Low: 43 °F

Wednesday

Slight Chance Rain Chance for Measurable Precipitation 20%

Slight Chc
Rain

High: 49 °F

Wednesday
Night

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

Low: 40 °F

Thanksgiving
Day

Rain Chance for Measurable Precipitation 100%

Rain

High: 47 °F

Thursday
Night

Rain

Rain

Low: 42 °F

Friday

Rain

Rain

High: 42 °F

Detailed Forecast

  • Late Afternoon Rain. High near 45. Southwest wind around 7 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
  • Tonight Rain. Low around 40. West wind 7 to 13 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
  • Tuesday Rain. High near 48. West southwest wind around 10 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
  • Tuesday Night Rain, mainly before 10pm. Low around 43. West southwest wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Wednesday A 20 percent chance of rain before 10am. Mostly cloudy, with a high near 49. West southwest wind around 6 mph becoming calm in the morning.
  • Wednesday Night A 40 percent chance of rain. Cloudy, with a low around 40.
  • Thanksgiving Day Rain. High near 47. Chance of precipitation is 100%.
  • Thursday Night Rain. Cloudy, with a low around 42.
  • Friday Rain. Cloudy, with a high near 42.
  • Friday Night Rain likely. Cloudy, with a low around 37.
  • Saturday A chance of rain. Mostly cloudy, with a high near 40.
  • Saturday Night A chance of rain and snow. Mostly cloudy, with a low around 29.
  • Sunday A chance of snow. Cloudy, with a high near 36.
  • Sunday Night A chance of snow. Cloudy, with a low around 27.
  • Monday A chance of snow. Cloudy, with a high near 39.