Original: The hottest air temperature ever recorded in Death Valley ( Furnace Creek ) was 134 ° F ( 57 ° C ) on July 10 , 1913 , also that same year saw Death Valley 's coldest temperature , on January 8 the temperature dropped to 67 ° F ( 20 ° C ) at Furnace Creek .
Simplified: On July 10 , 1913 , it was 134 ° F ( 57 ° C ) , which is the hottest recorded temperature in the United States .