why can't i erase my cities for weather

[AC Question]

droid turbo xt1254, android 5.1
I tried to put in a city by zip code, now i can't erase any cities. when i get to the configure screen from where i should be able to see my list of cities and erase some, there is nothing listed.
but when i go to view weather by cities in my drop-down menu, they are all there.
i can add cities, but can't erase any. it used to work and i used to be able to erase them, but ever since i put in that one location by zip, nothing.
the phone isn't rooted (yet).

how do i erase the cities?

 

[Rukbat]

You could uninstall the weather app and reinstall it. That would give you a weather app with no cities.