One town's temperature swung 103 degrees Fahrenheit in a single day

On 15 January 1972, a warm Chinook wind swept into Loma, Montana, and the temperature rose from −54°F to 49°F (−48°C to 9°C) in just 24 hours, the largest 24-hour temperature change ever officially recorded anywhere on Earth. Chinook winds form as air is forced up and over the Rocky Mountains, drying out and warming sharply as it descends the other side.

— National Weather Service, Loma, Montana — Record 24-hour temperature change, 1972