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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3 Miles S Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

Tonight

Rain/Snow Chance for Measurable Precipitation 90%

Rain/Snow

Low: 38 °F

Sunday

Rain Chance for Measurable Precipitation 100%

Rain

High: 41 °F

Sunday
Night

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

Low: 38 °F

Monday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 44 °F

Monday
Night

Rain Chance for Measurable Precipitation 80%

Rain

Low: 40 °F

Tuesday

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

High: 48 °F

Tuesday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 42 °F

Wednesday

Slight Chance Rain

Slight Chc
Rain

High: 48 °F

Wednesday
Night

Chance Rain

Chance
Rain

Low: 38 °F

Detailed Forecast

  • Tonight Rain and snow showers, becoming all rain after 10pm. Low around 38. West southwest wind 7 to 11 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
  • Sunday Rain. High near 41. West southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
  • Sunday Night Showers likely, mainly before 10pm. Mostly cloudy, with a low around 38. West southwest wind 3 to 6 mph. Chance of precipitation is 70%.
  • Monday Rain likely, mainly after 4pm. Cloudy, with a high near 44. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
  • Monday Night Rain. Low around 40. South southwest wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
  • Tuesday Showers likely, mainly before 10am. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.
  • Tuesday Night A 30 percent chance of rain. Mostly cloudy, with a low around 42.
  • Wednesday A slight chance of rain. Mostly cloudy, with a high near 48.
  • Wednesday Night A chance of rain. Mostly cloudy, with a low around 38.
  • Thanksgiving Day A chance of rain. Mostly cloudy, with a high near 45.
  • Thursday Night A chance of rain. Cloudy, with a low around 36.
  • Friday A chance of rain. Cloudy, with a high near 43.
  • Friday Night Rain likely. Cloudy, with a low around 36.
  • Saturday Rain likely. Cloudy, with a high near 44.