WindyCity Weather and News on X: #Chicagoweather #ChiWx #ILWx Factoid At - 40 you can interchangeably use either Celsius or Fahrenheit. -40C=-40F And you thought that only happens in science labs. Below -40

Arctic air mass brings wind chills to 30 below for Chicago area - CBS

Windy and warm Chicago Sunday with temperatures 30 degrees above

US National Weather Service Chicago Illinois - Gusty winds are

Wind chills as low as -40° expected tonight, Wind Chill Warnings

Warning in effect for Chicago area as wind chills drop to -30, -40

Chicago weather this week: Below-zero wind chills followed by 40

Chicago First Alert Weather: blustery and cold start to the week

After - US National Weather Service Chicago Illinois

Chicago First Alert Weather: Dry conditions, temperatures in mid

78040 Zip Code (Laredo, Texas) Profile - homes, apartments