Question, is a long sleeved tshirt, jeans, a really warm pullover, a winter coat, a beanie hat, thick gloves warm enough to wear on a 20 minute or so walk where there's risk of hypothermia or frostbite cautions? I don't want to cancel plans with my friend on Christmas Eve but I'm questioning if it's safe to be out in it for 25 minutes straight

The windchill is -7