While visiting Chicago’s WGN Morning News to discuss his involvement with Chicago Public Schools, including the $1 million donation he made to CPS earlier this year, Chance the Rapper also tried his gloved hand at giving the greater metropolitan area its weather forecast. More important, he got to teach viewers a little something about science. Did you know snowflakes each have unique DNA, like humans? Had you heard that, due to the Peruvian Purchase, Peru is now part of Illinois? Were you aware that Chance the Rapper owns a green-screen invisibility cloak that allows him to take books out of the Hogwarts’ library? If that wasn’t enough, know this: It’s going to be pretty chilly in Chi-Town this weekend.