In Studio, go to the top-right corner and expand the profile menu.
Select Fahrenheit to show all temperatures in Studio in Fahrenheit instead of Celsius.
The preferred temperature setting is stored locally in the browser. If you use a new browser, clear the local cache or use another computer, then you will have to re-select the setting.
Please note that the temperature events and the historical data in the API currently only supports Celsius and will have to be converted on the server side, if necessary.