Northern Illinois is bracing for unsettled weather conditions as Friday night approaches. Showers and potential thunderstorms are expected to move into the region, bringing a temporary shift before cooler, breezier conditions set in for the weekend. Thursday and Friday will remain mostly dry, with temperatures peaking in the low to mid-80s. However, late-evening storms, particularly north of Interstate 80, could bring localized heavy downpours and lightning. These conditions may impact travel and outdoor activities.