National Weather Service United States Department of Commerce

Developing storm will spread rain across eastern U.S.; thunderstorms in the Southeast

A storm system developing in the South will move up the Mississippi River Valley on Sunday bringing rainfall to much of the eastern U.S., along with thunderstorms in the southeastern states. Some of the thunderstorms in the Southeast could produce large hail, damaging wind and heavy rain.
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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

Overnight

Snow Chance for Measurable Precipitation 80%

Snow

Low: 30 °F

Sunday

Snow Chance for Measurable Precipitation 100%

Snow

High: 32 °F

Sunday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: 32 °F

Monday

Rain/Snow Likely Chance for Measurable Precipitation 60%

Rain/Snow
Likely

High: 41 °F

Monday
Night

Rain Chance for Measurable Precipitation 80%

Rain

Low: 35 °F

Tuesday

Showers Chance for Measurable Precipitation 80%

Showers

High: 44 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 37 °F

Wednesday

Slight Chance Rain

Slight Chc
Rain

High: 40 °F

Wednesday
Night

Chance Rain

Chance
Rain

Low: 33 °F

Detailed Forecast

  • Overnight Snow showers, mainly after 4am. Low around 30. West southwest wind around 11 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.
  • Sunday Snow. High near 32. Southwest wind around 16 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
  • Sunday Night Snow showers likely, mainly before 10pm. Mostly cloudy, with a low around 32. West wind 8 to 13 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
  • Monday A chance of snow before 4pm, then rain likely, possibly mixed with snow. Mostly cloudy, with a high near 41. West southwest wind around 11 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
  • Monday Night Rain. Low around 35. Breezy, with a west southwest wind 18 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
  • Tuesday Showers, mainly before 10am. High near 44. Breezy. Chance of precipitation is 80%.
  • Tuesday Night A 30 percent chance of rain. Mostly cloudy, with a low around 37. Breezy.
  • Wednesday A slight chance of rain. Mostly cloudy, with a high near 40.
  • Wednesday Night A chance of rain. Mostly cloudy, with a low around 33.
  • Thanksgiving Day A chance of rain and snow. Mostly cloudy, with a high near 39.
  • Thursday Night A chance of snow. Cloudy, with a low around 31.
  • Friday A chance of rain. Cloudy, with a high near 39.
  • Friday Night Rain and snow likely. Cloudy, with a low around 32.
  • Saturday Rain and snow likely. Cloudy, with a high near 39.