I am in the process of finishing up a Hubitat driver that will work with the WeatherFlow API. All the observational data works fine and is posted as events in the device, just doing some final cleanup for child devices and station/device information.
Before anyone asks, no, this will not receive the UDP broadcasts directly as Hubitat does not listen for broadcasts. It works on a query-response model. Unless that chances, the driver will only be for the API.