The National Weather Service has issued a frost advisory for areas east of Interstate 55 and south of Interstate 80, including Kankakee County, warning that frost may develop overnight.
The advisory covers Saturday night, October 17, 2026, into Sunday morning, October 18, 2026, as temperatures are expected to fall into the 30s °F, creating conditions suitable for frost formation.
The service monitors temperature trends and releases frost advisories when nighttime lows are low enough to cause frost.