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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9 Miles WNW Wilson WY

7 Day Forecast

For More Weather Information:

Riverton, WY Local Forecast Office

This
Afternoon

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 69 °F

Tonight

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

Low: 49 °F

Saturday

Scattered Thunderstorms Chance for Measurable Precipitation 40%

Scattered
Thunderstorms

High: 65 °F

Saturday
Night

Scattered Thunderstorms Chance for Measurable Precipitation 30%

Scattered
Thunderstorms

Low: 43 °F

Sunday

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

High: 59 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 40 °F

Labor
Day

Mostly Sunny

Mostly
Sunny

High: 59 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 40 °F

Tuesday

Sunny

Sunny

High: 66 °F

Detailed Forecast

  • This Afternoon Isolated showers and thunderstorms. Mostly sunny, with a high near 69. West southwest wind 11 to 13 mph. Chance of precipitation is 20%.
  • Tonight Scattered showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 49. West wind 8 to 15 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 30%.
  • Saturday Scattered showers and thunderstorms. Some of the storms could produce small hail and gusty winds. Mostly cloudy, with a high near 65. Breezy, with a south wind 13 to 21 mph becoming west southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Saturday Night Scattered showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 43. South southwest wind 8 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
  • Sunday Isolated showers and thunderstorms before noon. Mostly sunny, with a high near 59. South southwest wind 6 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
  • Sunday Night Partly cloudy, with a low around 40. South southwest wind 8 to 14 mph, with gusts as high as 20 mph.
  • Labor Day Mostly sunny, with a high near 59. South southwest wind around 10 mph.
  • Monday Night Partly cloudy, with a low around 40.
  • Tuesday Sunny, with a high near 66.
  • Tuesday Night Mostly clear, with a low around 43.
  • Wednesday A slight chance of showers and thunderstorms. Some of the storms could produce gusty winds. Mostly sunny, with a high near 68.
  • Wednesday Night A slight chance of showers and thunderstorms. Some of the storms could produce gusty winds. Partly cloudy, with a low around 44.
  • Thursday A slight chance of showers and thunderstorms. Some of the storms could produce gusty winds. Mostly sunny, with a high near 66.