Doorbell systems can be configured to detect and/or regulate temperature within a doorbell. Doorbell systems can comprise a temperature sensor coupled to the doorbell and a heating element coupled to the doorbell. Methods can include determining, by the doorbell, a first temperature of an inside portion of the doorbell. As well, methods can include heating, by the heating element, the inside portion of the doorbell in response to the first temperature being less than a first predetermined temperature. In some embodiments, doorbells detect humidity and then communicate the humidity to a remote device.