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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West Allis WI

7 Day Forecast

For More Weather Information:

Milwaukee, WI Local Forecast Office

This
Afternoon

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 80 °F

Tonight

Thunderstorms Likely Chance for Measurable Precipitation 70%

Thunderstorms
Likely

Low: 69 °F

Saturday

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

High: 79 °F

Saturday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 65 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 79 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 68 °F

Labor
Day

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

High: 80 °F

Monday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 63 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 79 °F

Detailed Forecast

  • This Afternoon A 50 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 80. South wind around 10 mph.
  • Tonight Showers and thunderstorms likely, mainly after 11pm. Mostly cloudy, with a low around 69. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Saturday Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 79. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
  • Saturday Night Mostly cloudy, with a low around 65. West wind 5 to 10 mph becoming light and variable in the evening.
  • Sunday Mostly sunny, with a high near 79. Light and variable wind becoming south 5 to 10 mph in the afternoon.
  • Sunday Night A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. South wind 5 to 10 mph.
  • Labor Day Showers and thunderstorms likely. Cloudy, then gradually becoming mostly sunny, with a high near 80. South wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
  • Monday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. West wind 5 to 10 mph.
  • Tuesday Mostly sunny, with a high near 79.
  • Tuesday Night Partly cloudy, with a low around 63.
  • Wednesday Mostly sunny, with a high near 79.
  • Wednesday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
  • Thursday A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.