National Weather Service United States Department of Commerce

The flash flooding threat will begin moving east out of the Plains into the Upper Midwest and Great Lakes on Thursday

Flash flooding will continue to be possible on Thursday but will begin moving out of the central and northern Plains. The area of concern will be the Upper Midwest edging into the the eastern Great Lakes region. 1 to 2 inches of rainfall will be possible into Friday.
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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

Mostly Clear

Mostly
Clear

Low: 59 °F

Thursday

Mostly Sunny

Mostly
Sunny

High: 62 °F

Thursday
Night

Increasing Clouds

Increasing
Clouds

Low: 47 °F

Friday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 60 °F

Friday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 44 °F

Saturday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 53 °F

Saturday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 42 °F

Sunday

Chance Showers

Chance
Showers

High: 59 °F

Sunday
Night

Chance Showers

Chance
Showers

Low: 43 °F

Detailed Forecast

  • Overnight Mostly clear, with a low around 59. Northwest wind around 6 mph.
  • Thursday Mostly sunny, with a high near 62. North northwest wind 6 to 14 mph, with gusts as high as 21 mph.
  • Thursday Night Increasing clouds, with a low around 47. North northwest wind 7 to 14 mph, with gusts as high as 21 mph.
  • Friday A 20 percent chance of showers after 11am. Mostly cloudy, with a high near 60. North northwest wind 5 to 14 mph becoming west in the morning. Winds could gust as high as 21 mph.
  • Friday Night A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 44. West wind around 17 mph, with gusts as high as 30 mph.
  • Saturday A 30 percent chance of showers, mainly after 11am. Cloudy, with a high near 53.
  • Saturday Night A 30 percent chance of showers. Mostly cloudy, with a low around 42.
  • Sunday A chance of showers. Mostly cloudy, with a high near 59.
  • Sunday Night A chance of showers. Mostly cloudy, with a low around 43.
  • Labor Day A slight chance of showers. Partly sunny, with a high near 60.
  • Monday Night A slight chance of showers. Mostly cloudy, with a low around 46.
  • Tuesday A slight chance of showers. Partly sunny, with a high near 63.
  • Tuesday Night A slight chance of showers. Mostly cloudy, with a low around 48.
  • Wednesday A slight chance of showers. Partly sunny, with a high near 61.