The record for the most abrupt temperature change in the United States is held by Spearfish, South Dakota, where it took just 2 minutes to warm up from -4° to 45° Fahrenheit on August 29, 1936.
The U.S. location holding the record for the greatest range of temperatures over a 24-hour period is Browning, Montana, where the mercury went from a low of -56° to a high of 44° Fahrenheit on January 23-24, 1916.
