The Swidget App allows you to change temperature units within the Manage Sites screen in the settings menu.  Follow the instructions below to change between Celsius (°C) and Fahrenheit (°F).

1. Tap Settings at the bottom of the screen.
2. Tap Manage Sites from the Settings screen.
3. Tap the Site you would like to manage.
   
4. Select Unit Preferences
5. Tap the unit that you want to change and select the new unit.