There are two units of temperature that are commonly used around the world: degrees Celsius (ÂșC) and Kelvin (K). For some strange reason, Americans also use degrees Fahrenheit (ÂșF).
While you canât set your iPhone to use Kelvin (theyâre more popular with scientists than the general public), you can swap it between Celsius and Fahrenheit. Siri, iOSâs Weather app, and any other app that pulls the default weather data from your phone will use your chosen units.
This makes life a little easier if youâre an American whoâs come to their senses and wants to join the rest of the world, or a European in America who wants to use the local lingo. Hereâs how.
Go to Settings > General > Language & Region.
Select Temperature Unit and then change it to either Celsius or Fahrenheit, whichever you want to use.
Now your iPhone will use that unit by default whenever it needs to show the temperature. Note that many third party apps donât use iOSâs weather service to get data, so they might have their own preference settings.