Hi, on the dashboard of your Fitbit app, press the watch icon on top of the screen on the right side. you will see the page that says Clock Faces, Apps, etc. Press Apps, go into My apps and scroll down untill you see the Weather app. Press the settings icon right next to the apps's name and you go to the page where youcan change these settings. Under Temperature Unit, press unit and change if from Celsius to Fahrenheit and press Done.
