Chicago Weather
In July, Chicago can get very hot, so dress appropriately. Afternoon thunderstorms after a bright sunny day are always a possibility. You can check the current weather and get several days' forecast at AccuWeather.com or weather.com.

Activities
If you choose to come early or stay after the wedding weekend, there are some places and activities you might enjoy in the Chicago area, such as the lakefront beaches, Brookfield Zoo, the Museum of Science and Industry, the Adler Planetarium and Six Flags Great America.