A significant dip in the jet stream is causing a cold front to sweep across the Midwest, bringing unseasonably cool temperatures and increased chances of precipitation. This pattern is expected to persist over the next few days, affecting states such as Illinois, Indiana, and Ohio. The cold front is characterized by a drop in temperatures, with highs only reaching the mid-50s°F (around 13°C) in some areas, which is below the average for this time of year. Additionally, the system is likely to bring scattered showers and thunderstorms, particularly in the afternoon and evening hours. This weather pattern is a result of a high-pressure system moving eastward, allowing the jet stream to dip further south than usual, pulling cooler air from Canada into the region.