National Weather Service United States Department of Commerce

Oppressive heat and humidity building into the central and southeast U.S.

A heat wave is building into parts of the central and southeast U.S. this week. The combination of heat and humidity will lead to dangerous heat indices, especially in parts of the central Mississippi River Valley where an Excessive Heat Warning is in effect. Heat Advisories are in effect elsewhere across the region. Relief is not expected for several days.
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Current Conditions

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Lake Zurich IL

7 Day Forecast

For More Weather Information:

Chicago, IL Local Forecast Office

Overnight

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

Low: 69 °F

Thursday

Thunderstorms Likely Chance for Measurable Precipitation 60%

Thunderstorms
Likely

High: 86 °F

Thursday
Night

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

Low: 70 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 88 °F

Friday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 71 °F

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 87 °F

Saturday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 70 °F

Sunday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 88 °F

Sunday
Night

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

Low: 70 °F

Detailed Forecast

  • Overnight A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Calm wind.
  • Thursday Showers and thunderstorms likely, mainly between 7am and 1pm. Mostly cloudy, with a high near 86. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
  • Thursday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 5 to 10 mph.
  • Friday A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 88. Heat index values as high as 97. Southwest wind around 5 mph becoming east in the afternoon. Winds could gust as high as 10 mph.
  • Friday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Northwest wind around 5 mph becoming east northeast in the evening. Winds could gust as high as 10 mph.
  • Saturday A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
  • Saturday Night A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
  • Sunday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88.
  • Sunday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70.
  • Monday A chance of showers and thunderstorms. Mostly sunny, with a high near 87.
  • Monday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67.
  • Tuesday A chance of showers and thunderstorms. Mostly sunny, with a high near 82.
  • Tuesday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
  • Wednesday A chance of showers and thunderstorms. Partly sunny, with a high near 84.