Very stubborn since the rest of the world is doing celsius
Fahrenheit was developed in the 18th century by Daniel Gabriel Fahrenheit, a German physicist, and it was used across most of the Western world until the late 20th century when most countries converted over to Celsius. While the United States and a few territories still uses the Fahrenheit scale, nearly all countries switched over to Celsius in the 1970s as a move to standardize on metric measurement system