There is a location field for the Account bridge, but that is not what you want. But if your Account Thing is not coming online, then you will need to sort that first… probably the API key is incorrect. There should be logs, but you may need to enable debug logging for the binding. Once the Account is online, you can do a discovery for the binding and it will find the Weather and Forecast Thing.
Relevant to everyone who can follow instruction 
! Manual Jython installation instructions are here, but you can also use the beta Jython addon.