The most likely inference you can make based on a character wearing a hat, coat, gloves, and scarf is that the story is set somewhere cold. To reach this conclusion, you can consider the fact that these items of clothing are typically associated with cold weather and used to keep warm. Therefore, it is safe to assume that the character is trying to protect themselves from the cold environment, indicating that the story is set in a cold location. The other options, such as the story taking place at night, being set in the 1950s, or taking place in Wisconsin, cannot be directly inferred from the character's clothing.