105-Degree Heat Index, Severe Storms: Chicago Weather

A hot and stormy beginning of the week is ahead as a heat advisory is in effect through 6 p.m. Monday for much of the Chicago area. First, possibly severe storms will roll into the area on Sunday. According to the National Weather Service, scattered storms are possible Sunday afternoon into the evening, and are most likely along and north of I-80.

"The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible," the National Weather Service said. "Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun and check up on relatives and neighbors." If you don't have air conditioning, check with your village of city government to find an available cooling center.

Monday, Tuesday and Wednesday could also see some storms, and hot and humid conditions are expected through Tuesday, the NWS said. Heat indices of 100 to 105 degrees are possible for the start of the week.

Temps will start to cool down on Wednesday, which has a high of 79 degrees. Thursday has a high near 80 degrees and should be sunny and dry. Storms could return on Friday, which has a high of 80 and a slight chance of storms and rain, according to the NWS.

Here is a more detailed look at the weather this week:

• MONDAY: A 20 percent chance of showers and thunderstorms before 8 a.m. Mostly sunny, with a high near 90. Heat index values as high as 97. South southwest wind around 15 mph, with gusts as high as 25 mph.
• MONDAY NIGHT: Partly cloudy, with a low around 75. South southwest wind around 15 mph, with gusts as high as 25 mph.
• TUESDAY: A 20 percent chance of showers and thunderstorms after 8 a.m. Partly sunny, with a high near 89. Southwest wind around 15 mph, with gusts as high as 25 mph.
• TUESDAY NIGHT: Showers and thunderstorms likely, mainly after 2 a.m. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
• WEDNESDAY: Showers and thunderstorms likely, mainly before 8 a.m. Partly sunny, with a high near 77. Chance of precipitation is 60%.
• WEDNESDAY NIGHT: Partly cloudy, with a low around 59.
• THURSDAY: Sunny, with a high near 77.
• THURSDAY NIGHT: Mostly clear, with a low around 61.
• FRIDAY: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
• FRIDAY NIGHT: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Image via Shutterstock.