St. Louis, MO – Temperatures approaching the freezing mark could bring widespread frost to portions of the St. Louis metropolitan area and southern Illinois early Sunday, October 18. A frost advisory is in effect as overnight lows fall between 32 and 36 degrees, creating potentially damaging conditions for sensitive plants and outdoor vegetation.
According to the National Weather Service in St. Louis, the advisory covers portions of eastern Missouri and southern Illinois, with the coldest conditions expected late Saturday night into early Sunday morning.
The advisory includes parts of the St. Louis metropolitan area, particularly communities south of the Missouri River, along with portions of southwestern and south-central Illinois…