The National Weather Service is warning Chicagoans of dangerously cold temperatures that can cause frostbite from Sunday night into Monday.
The wind chill advisory will be in effect from 9 p.m. Sunday until noon Monday, according to the weather service. The wind chill values will range between 15 and 25 below zero, with the coldest temperatures happening around daybreak Monday.
The wind chills can cause frostbite to exposed skin in as little as 30 minutes.
“If you must venture outdoors…make sure you wear a hat and gloves,” according to the weather service.
The Illinois Tollway launched around-the-clock Zero Weather Road Patrols Sunday. The 24-hour patrols search for stranded drivers and respond to calls that come in to Illinois State Police. Drivers are advised to keep cellphones fully charged before heading out and to remain in their vehicles until help arrives if they are stranded.
The high temperature Monday is expected to reach 12 degrees. The rest of the week is expected to warm up significantly, according to the weather service. Tuesday will be mostly sunny with a high near 20 degrees, and there will be a 40 percent chance of snow after midnight.