On July 11, 1888 Bennett, Colorado was 118F. That record was erased sometime between August 22, 2020 and September 29, 2020, and changed to 115F in 2019.
Wayback Machine https://www.ncdc.noaa.gov/oa/pub/data/special/maxtemps.pdf
Record Highest Temperatures by State
Record Highest Temperatures by State
The claim of 115F on July 20. 2019 at John Martin Reservoir is not credible. It was only 107F at nearby Las Animas