Weather widget is stuck on "Add cities"

Really dumb question here... I am new to smartphones.

Somehow I accidentally hit the weather thing, and it went to "add cities". I cannot get it to go back to just showing the temperature.

How do I exit or cancel this? When I touch it, it just goes into the setup screen, and when I exit that, it still says "add cities" instead of the temp.

Is there an "escape" key on this thing?