Chicago is bracing for a significant overnight temperature drop as a cold front is expected to move into the area, according to CBS News. After a period of mild weather, residents are advised to prepare for much colder conditions, as temperatures are predicted to fall sharply due to a shift in weather patterns that will bring colder air from the north. The National Weather Service has not specified the exact degree of the temperature drop but expects it to be noticeable by morning. They advise residents to monitor weather updates and take precautions to stay warm, as the temperature plunge may affect daily commutes, outdoor activities, and energy consumption across the city.