Weather Alerts For Union, IL

URGENT - WEATHER MESSAGE National Weather Service Chicago IL 343 AM CST Sat Dec 13 2025 Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-Northern Cook-Central Cook-Southern Cook-Northern Will-Southern Will- Eastern Will-Lake IN-Newton-Jasper-Benton- Including the cities of Naperville, Manhattan, McHenry, Waukegan, Downers Grove, Bradley, Streator, Calumet City, Oak Forest, Des Plaines, Lemont, Park Forest, DeMotte, Peotone, Fairbury, Merrillville, Sycamore, Rochelle, Aurora, Algonquin, Crystal Lake, Buffalo Grove, Mokena, Carol Stream, Watseka, Orland Park, Plainfield, Joliet, Bourbonnais, Northbrook, Chicago, Woodstock, Yorkville, Morocco, Gilman, Roselawn, Minooka, Rensselaer, Evanston, Palatine, Oregon, Paxton, La Grange, DeKalb, Lombard, Channahon, Crete, Oak Park, Plano, Mundelein, Kankakee, Dixon, Mendota, Byron, Pontiac, Morris, Fowler, Gary, Bolingbrook, Marseilles, Hammond, Belvidere, Rockford, Ottawa, Oxford, Beecher, La Salle, Coal City, Schaumburg, Cicero, Kentland, Elgin, Gibson City, Gurnee, Dwight, Oak Lawn, Oswego, Wilmington, and Wheaton 343 AM CST Sat Dec 13 2025 /443 AM EST Sat Dec 13 2025/ ...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM CST /9 PM EST/ THIS EVENING TO NOON CST /1 PM EST/ SUNDAY... * WHAT...Very cold wind chills of 20 to 25 below zero expected. * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From 8 PM CST /9 PM EST/ this evening to noon CST /1 PM EST/ Sunday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. &&