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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Decorah IA

7 Day Forecast

For More Weather Information:

La Crosse Local Forecast Office

Tonight

Thunderstorms Chance for Measurable Precipitation 80%

Thunderstorms

Low: 65 °F

Saturday

Scattered Thunderstorms Chance for Measurable Precipitation 30%

Scattered
Thunderstorms

High: 78 °F

Saturday
Night

Partly Cloudy

Partly
Cloudy

Low: 61 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 84 °F

Sunday
Night

Thunderstorms Chance for Measurable Precipitation 80%

Thunderstorms

Low: 66 °F

Labor
Day

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 78 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 59 °F

Tuesday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 77 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 58 °F

Detailed Forecast

  • Tonight Periods of showers and thunderstorms, mainly before 4am. Low around 65. South wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
  • Saturday Scattered showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 78. Northwest wind 3 to 6 mph. Chance of precipitation is 30%.
  • Saturday Night Partly cloudy, with a low around 61. Northwest wind around 5 mph becoming calm in the evening.
  • Sunday Mostly sunny, with a high near 84. Light south wind increasing to 8 to 13 mph in the morning.
  • Sunday Night Showers and thunderstorms, mainly after 10pm. Low around 66. South wind 10 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
  • Labor Day A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 78. West wind 9 to 11 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Monday Night Partly cloudy, with a low around 59. West wind 3 to 6 mph.
  • Tuesday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77. West wind 5 to 8 mph.
  • Tuesday Night Partly cloudy, with a low around 58. Southwest wind 5 to 7 mph.
  • Wednesday Sunny, with a high near 80. Southwest wind 5 to 7 mph.
  • Wednesday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 7 mph.
  • Thursday A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83. South wind 7 to 10 mph.
  • Thursday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 8 mph becoming east after midnight.
  • Friday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Northeast wind 7 to 10 mph.