The overnight will consist of an increase of cloud cover and another night of below average temperatures. Friday morning's wind chill, which will be about minus 18 when children are supposed to be waiting at bus stops, might cause local school districts to at least call for a delay. Areas to the south of 8 Mile are in a Wind Chill ADVISORY for the same time.
This is when we will experience some of the coldest wind chills.
A Wind Chill Advisory is in effect tonight until 10AM CST Saturday morning for northeast IL and northwest in counties away from Lake Michigan (light-blue-shaded area on map below). Winds gusting to 30-40 miles per hour will result in the brutally cold wind chills.
Warmer air with more moisture will be pushing in Sunday and MOnday as a storm system brings us good chances for accumulating snow across all of northern Ohio. Temperatures Thursday night will fall to around -2° to 0°. Those clear skies will allow for another substantial drop in temperatures. The cold will continue with lows overnight around -4°. It's not the kind of record we like to break as the lowest high temps ever on January 5th and 6th are in jeopardy.
Frostbite can occur in as little as 15 minutes to exposed skin in temperatures that low.
MONDAY: A wintry mix to rain will continue into Monday, with a high temperature of 39 degrees. Highs will be a few degrees warmer than Friday, and reach the middle teens. We will be under partly to mostly sunny skies. Expect some rain throughout the day.