Symptoms of an allergic reaction which may require medical intervention include: 1  Swelling or angioedema of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs. 2  Hoarseness. 3  Difficulty breathing or swallowing. 4  Rash or hives. 5  Abdominal pain.
Averages for Chicago in December. December in Chicago is winter and this means an extremely cold climate that can be subject to icy winds and snow. Make sure you layer up your clothes with a warm coat over the top, as winter in Chicago can be brutal. If you're not one for cold weather, Chicago is a city to be avoided in January! Read more.
Chicago has a humid continental climate with hot summers and no dry season. The temperature typically varies from 21Â°F to 83Â°F over the course of the year, and is rarely below 3Â°F or above 91Â°F. The warm season lasts for 113 days, from May 30 to September 20, with an average daily high temperature above 73Â°F.