National Weather Service United States Department of Commerce

Flash flooding possible for parts of Upper Midwest

A slow-moving weather system progressing from the northern Plains to the Great Lakes will bring excessive rainfall and a risk of flash flooding to portions of the Upper Midwest on Friday. The heaviest rainfall is expected from central Iowa northeastward across southeastern Minn. and into Wisc. Rainfall totals of 1-2 inches, with locally-higher amounts, are possible through Saturday morning.
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Current Conditions

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6 Miles NNW Mount St Helens WA

7 Day Forecast

For More Weather Information:

Portland, OR Local Forecast Office

This
Afternoon

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 70 °F

Tonight

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 48 °F

Saturday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 63 °F

Saturday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 48 °F

Sunday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 66 °F

Sunday
Night

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

Low: 48 °F

Labor
Day

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 69 °F

Monday
Night

Slight Chance Showers

Slight Chc
Showers

Low: 47 °F

Tuesday

Slight Chance Showers

Slight Chc
Showers

High: 72 °F

Detailed Forecast

  • This Afternoon A 20 percent chance of showers. Mostly cloudy, with a high near 70. West wind around 8 mph.
  • Tonight A 20 percent chance of showers. Cloudy, with a low around 48. West northwest wind 5 to 9 mph becoming light in the evening.
  • Saturday A 30 percent chance of showers. Cloudy, with a high near 63. Southwest wind 5 to 7 mph.
  • Saturday Night A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 48. West wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
  • Sunday A 30 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 66. Light west wind increasing to 5 to 10 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
  • Sunday Night A 40 percent chance of showers. Mostly cloudy, with a low around 48.
  • Labor Day A 20 percent chance of showers. Partly sunny, with a high near 69.
  • Monday Night A slight chance of showers. Mostly cloudy, with a low around 47.
  • Tuesday A slight chance of showers. Partly sunny, with a high near 72.
  • Tuesday Night A slight chance of showers. Mostly cloudy, with a low around 49.
  • Wednesday A slight chance of showers. Partly sunny, with a high near 69.
  • Wednesday Night A slight chance of showers. Mostly cloudy, with a low around 48.
  • Thursday Partly sunny, with a high near 70.