National Weather Service United States Department of Commerce

Severe weather expected for Upper Midwest on Wednesday

A potent storm system will bring a chance of severe thunderstorms to parts of the Upper Midwest on Wednesday and Wednesday night. Very large hail, damaging wind gusts, tornadoes and heavy rain are possible with these storms.
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Hazardous Weather Conditions

Current Conditions

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Chicago IL

7 Day Forecast

For More Weather Information:

Chicago, IL Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 19 °C

Wednesday

Sunny

Sunny

High: 29 °C

Wednesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 22 °C

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 33 °C

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 24 °C

Friday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 26 °C

Friday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 17 °C

Saturday

Mostly Sunny

Mostly
Sunny

High: 22 °C

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 14 °C

Detailed Forecast

  • Overnight Mostly clear, with a low around 19. West southwest wind 5 to 10 km/h.
  • Wednesday Sunny, with a high near 29. South wind 5 to 10 km/h increasing to 15 to 20 km/h in the afternoon.
  • Wednesday Night A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 22. South wind 15 to 20 km/h.
  • Thursday A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 33. Heat index values as high as 36. South southwest wind 20 to 25 km/h increasing to 25 to 30 km/h in the afternoon. Winds could gust as high as 50 km/h.
  • Thursday Night A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 24. South southwest wind 15 to 25 km/h, with gusts as high as 35 km/h.
  • Friday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 26.
  • Friday Night A slight chance of showers. Mostly cloudy, with a low around 17. Chance of precipitation is 20%.
  • Saturday Mostly sunny, with a high near 22.
  • Saturday Night Mostly clear, with a low around 14.
  • Sunday Sunny, with a high near 22.
  • Sunday Night Mostly clear, with a low around 14.
  • Monday Sunny, with a high near 23.
  • Monday Night Partly cloudy, with a low around 16.
  • Tuesday A chance of showers and thunderstorms. Partly sunny, with a high near 23.