CHICAGO—Steeling themselves against the occasional breeze and the cold of the wrought iron table and chairs against their skin, a group of determined restaurant-goers reportedly braved the slightly chilly temperature Thursday and dined on the outdoor patio of a local gastropub. “It’s pretty nice out,” said 29-year-old Erin LaVelle, who, despite occasionally shivering beneath her light jacket, was unflinching in her commitment to forego an indoor table and stick it out in the nippy 56-degree weather. “It’s so nice to eat outside. I love this time of year.” At press time, the strong-willed group of friends was courageously enduring a perilously brisk period during which a cloud was passing in front of the sun.