Moderate Expected Likely Cold Weather Advisory Cold Weather Advisory issued December 14 at 3:29AM CST until December 14 at 12:00PM CST by NWS St Louis MO Dec 14, 3:29 AM → Dec 14, 12:00 PM WHAT: Very cold wind chills between 10 and 20 below expected. WHERE: In Illinois, Clinton IL, Washington IL, Monroe IL,Randolph IL, and Saint Clair IL Counties. In Missouri, Lincoln MO,Saint Charles MO, Saint Louis City MO, and Saint Louis MO Counties. WHEN: Until noon CST today. IMPACTS: The cold wind chills between 10 and 15 below zero couldresult in hypothermia or frostbite if precautions are not taken. + Read More Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Updated: Dec 14, 6:14 AM Source: NWS Alert