The key to having fun in really cold weather is preparation. Bison prepare by having thick fur and a healthy layer of insulating fat. We replace those adaptions with appropriate clothing and regulating our activity. (Pardon the selfie but I thought you'd see my resemblance to the bison). Properly prepared we not only get to see formations that only occur in really cold weather like these snowghosts over hot spring outflows, but we are comfortable doing it. Having fun at -27 ain't so hard.