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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Hazardous Weather Conditions

Current Conditions

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Boulder CO

7 Day Forecast

For More Weather Information:

Denver-Boulder, CO Local Forecast Office

Late
Afternoon

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 82 °F

Tonight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 56 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 10%

Slight Chc
Thunderstorms

High: 84 °F

Saturday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 60 °F

Sunday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 80 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 54 °F

Labor
Day

Mostly Sunny

Mostly
Sunny

High: 80 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 55 °F

Tuesday

Sunny

Sunny

High: 81 °F

Detailed Forecast

  • Late Afternoon A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Northwest wind around 7 mph.
  • Tonight A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 56. Northwest wind 5 to 7 mph becoming west southwest after midnight.
  • Saturday A 10 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. West wind 6 to 10 mph becoming southeast in the afternoon.
  • Saturday Night Mostly cloudy, with a low around 60. West southwest wind 5 to 9 mph.
  • Sunday A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Breezy, with a west wind 6 to 15 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
  • Sunday Night Partly cloudy, with a low around 54.
  • Labor Day Mostly sunny, with a high near 80.
  • Monday Night Partly cloudy, with a low around 55.
  • Tuesday Sunny, with a high near 81.
  • Tuesday Night Mostly clear, with a low around 59.
  • Wednesday Sunny, with a high near 84.
  • Wednesday Night Partly cloudy, with a low around 60.
  • Thursday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
  • Thursday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.
  • Friday A slight chance of showers and thunderstorms. Partly sunny, with a high near 79.