Fahrenheit
From Memory Alpha, the free Star Trek reference.
The degree Fahrenheit (or simply °F) is a thermometric scale named after Earth physicist Gabriel Fahrenheit.
The Fahrenheit temperature scale was designed so that the freezing point of water is 32° and the boiling point is 212° at 1 Earth atm.
Sensors aboard 23rd century Federation starships can be calibrated to read in degrees Fahrenheit. However, like the mile, this antiquated means of measurement was used only on rare occasions. (Star Trek: The Original Series)
Comparative list of temperatures
- Uhura noted the weather forecast at Mount Rushmore as being sunny skies with a temperature of 70° (Fahrenheit). (Star Trek V: The Final Frontier)
- Zefram Cochrane maintained a constant temperature of 72° (Fahrenheit) in his dwelling on the Companion's homeworld. To Nancy Hedford, who was suffering from Sakuro's Disease, this temperature felt "terribly hot." (TOS: "Metamorphosis")
- The surface temperature of the Companion's homeworld was reported by Doctor Leonard McCoy to be 75 °Fahrenheit. (TOS: "Metamorphosis")
- A weather report, heard on the Henry Starling's radio in 1967, noted that the temperature in downtown Barstow was 75° (Fahrenheit). (VOY: "Future's End")
- While scanning the surface of a planet, Spock's sensor readings discovered a Human being, later determined to be named Lazarus, with a body temperature 98.5 °Fahrenheit. (TOS: "The Alternative Factor")
