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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Rapid City SD

7 Day Forecast

For More Weather Information:

Rapid City, SD Local Forecast Office

Today

Scattered Thunderstorms Chance for Measurable Precipitation 30%

Scattered
Thunderstorms

High: 26 °C

Tonight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 14 °C

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 29 °C

Saturday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 14 °C

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 22 °C

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 11 °C

Labor
Day

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 23 °C

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 12 °C

Tuesday

Sunny

Sunny

High: 26 °C

Detailed Forecast

  • Today Scattered showers and thunderstorms. Mostly sunny, with a high near 26. Breezy, with a north wind 30 to 35 km/h decreasing to 16 to 21 km/h in the afternoon. Winds could gust as high as 48 km/h. Chance of precipitation is 30%.
  • Tonight A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 14. North wind 8 to 13 km/h becoming light and variable.
  • Saturday A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 29. South wind 5 to 15 km/h increasing to 17 to 27 km/h. Winds could gust as high as 39 km/h.
  • Saturday Night A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 14. Northwest wind 18 to 23 km/h becoming northwest 11 to 16 km/h after midnight. Winds could gust as high as 32 km/h.
  • Sunday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 22. Northwest wind 8 to 13 km/h increasing to 16 to 21 km/h in the afternoon. Winds could gust as high as 29 km/h.
  • Sunday Night Partly cloudy, with a low around 11. Northwest wind 11 to 16 km/h becoming light and variable after midnight.
  • Labor Day A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 23.
  • Monday Night Partly cloudy, with a low around 12.
  • Tuesday Sunny, with a high near 26.
  • Tuesday Night Mostly clear, with a low around 13.
  • Wednesday Mostly sunny, with a high near 28.
  • Wednesday Night Partly cloudy, with a low around 16.
  • Thursday Mostly sunny, with a high near 28.