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.
Weather Directory. Chicago's coldest month is January when the average temperature overnight is 14.3Â°F. In July, the warmest month, the average day time temperature rises to 83.5Â°F. The driest month in Chicago is February with 1.63 inches of precipitation, and with 4.62 inches August is the wettest month.