(Source: Wikipedia) - Brief information and overview of Chicago

Chicago is the most populous city in the state of Illinois and in the U.S. Midwest. Situated on the western shore of Lake Michigan, it is the third most populous city in the United States and the fifth most populous in North America; according to the 2020 census, it had a population of 2.74 million. The Chicago metropolitan area, which had approximately 9.62 million residents as of the 2020 census, is the third-largest metropolitan area in the country. It is also part of the fourth-largest combined statistical area in the United States, which spans 19 counties across three states and has a population of nearly 10 million. Chicago serves as the county seat of Cook County, the second most populous county in the United States.

Climate in Chicago:
The city mostly lies within the typical hot-summer humid continental climate (Köppen: Dfa), and experiences four distinct seasons. Summers are hot and humid, with frequent heat waves. The July daily average temperature is 75.4 °F (24.1 °C), with afternoon temperatures peaking at 84.5 °F (29.2 °C). In a normal summer, temperatures reach at least 90 °F (32 °C) on 17 days, with lakefront locations staying cooler when winds blow off the lake. Winters are relatively cold and snowy. Blizzards do occur, such as in winter 2011. There are many sunny but cold days. The normal winter high from December through March is about 36 °F (2 °C). January and February are the coldest months. A polar vortex in January 2019 nearly broke the city's cold record of −27 °F (−33 °C), which was set on January 20, 1985. Measurable snowfall can continue through the first or second week of April.