- 46.5 degree(s) Celsius
Willie Jones (USA) was admitted to Grady Memorial Hospital, Atlanta, Georgia, USA on 10 July 1980 with heatstroke on a day when the temperature reached 32.2°C (90°F) with 44 % humidity. His temperature was found to be 46.5°C (115.7°F). He was discharged after 24 days.
At the time he was aged 52.