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Dangerous heat en route, with heat indexes reaching up to 110 degrees – NBC Chicago

The summer solstice may not begin until June 21, but strong summer heat is expected to develop over the next few days – with heat advisories, temperatures in the 90s and dangerous heat indices that could reach the three digits.

Here’s a breakdown of what the weather should be like this week.


A mild morning with temperatures in the 50s and 60s will give way in the afternoon to humidity and temperatures between the mid 80s and low 90s, but warmer temperatures are expected in the inland, according to Storm Team 5.

The National Weather Service has issued a heat advisory Monday noon through 8 p.m. Wednesday for La Salle, Grundy, Kankakee, Livingston, Iroquois, and Ford counties in Illinois, as well as Newton, Jasper, and Benton counties in Illinois. ‘Indiana.

Officials said heat indices are expected to peak in the afternoon, reaching between 105 and 109 degrees.

According to the latest forecast models, around 11 a.m. showers and thunderstorms are expected to develop west of the city, moving east through Lake and Cook counties around 1 p.m.

While the storms are expected to move quickly and be out of the Chicago area by 4 p.m., there is a slight risk that some storms will become severe. During that time, some areas could see damaging winds of up to 75 miles per hour and very large hail.

Storms in some areas may also be capable of producing conditions that could lead to a tornado.

The evening is expected to be mostly dry and partly sunny, with temperatures in the mid-80s.

Tuesday and Wednesday

Starting Tuesday at noon, all other counties in the region will be subject to a heat advisory.

Tuesday is expected to be mostly sunny, hot and humid, according to Storm Team 5, with a high temperature of 97 degrees, just two degrees lower than the record high of 99 degrees set in 1987.

On Tuesday, the heat index is expected to reach between 100 and 110 degrees.

Wednesday will remain hot and humid, with a maximum temperature of 96 degrees, one degree higher than the record temperature of June 15, set in 1994.

The heat index on Wednesday will have it feeling closer to 100-105 degrees, and storms could develop later in the day.

As the heat rises, officials advise drinking plenty of water, staying in air conditioning and out of the sun, and watching relatives and neighbors.

The Centers for Disease Control and Prevention have given the following recommendations for avoiding heatstroke:

  • Wear lightweight, light-colored, loose-fitting clothing
  • Stay in the air conditioning as much as possible
  • Reduce exercise in the heat
  • Try to limit your outdoor activities to cooler times, such as morning and evening hours

Thursday and Friday

According to Storm Team 5, storms developing late Wednesday should bring some relief from the heat and humidity, as temperatures drop from the 90s to the 80s.

Thursday is expected to be partly sunny with temperatures in the mid to high 80s and a chance of morning showers.

Friday is also expected to be partly sunny, with high temperatures in the 80s.

NBC Chicago

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