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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5 Miles S Olympus Hgt CO

7 Day Forecast

For More Weather Information:

Denver-Boulder, CO Local Forecast Office

This
Afternoon

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 66 °F

Tonight

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 48 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 68 °F

Saturday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 49 °F

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 63 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 10%

Slight Chc
Thunderstorms

Low: 45 °F

Labor
Day

Breezy

Breezy

High: 67 °F

Monday
Night

Breezy

Breezy

Low: 48 °F

Tuesday

Sunny

Sunny

High: 68 °F

Detailed Forecast

  • This Afternoon A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 66. North northwest wind 6 to 8 mph.
  • Tonight A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 48. Light and variable wind becoming west 5 to 8 mph after midnight.
  • Saturday A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 68. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.
  • Saturday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 49. West southwest wind around 14 mph, with gusts as high as 22 mph.
  • Sunday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 63. Breezy, with a west wind 14 to 20 mph, with gusts as high as 32 mph.
  • Sunday Night A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45.
  • Labor Day Sunny, with a high near 67. Breezy.
  • Monday Night Partly cloudy, with a low around 48. Breezy.
  • Tuesday Sunny, with a high near 68.
  • Tuesday Night Mostly clear, with a low around 51.
  • Wednesday Sunny, with a high near 70.
  • Wednesday Night Partly cloudy, with a low around 52.
  • Thursday Mostly sunny, with a high near 70.