Whats the highest elevation in the USA ever to record a reliable 100-degree reading?
The record may well be Jackson, Wyo., (elevation 6,200 feet), which recorded a high of 101° on July 17, 1934. In general, it would appear that an elevation of 6,000 to 6,500 feet is the upper limit throughout the West for 100° to be recorded. However, Santa Fe (elevation 7,000 feet) reached 99.5° on June 26, 1994, during the worst heat wave on record in the Southwest USA. For more, this USA TODAY page lists each state’s high temperature record. (Answered by Christopher Burt, author of Extreme Weather, Sept.
