How do I change a location setting in weather?

Delete the location and add a new location.

Open the Weather app, tap the 3 horizontal lines at the bottom right of the screen.

To add a location, type into the search bar immediately below the large word "Weather" and then type "Add" at top right after that location appears. To delete a location, slide it to the left and tap the trashcan icon.

I also need to change the location on the new iOS version….I need to get rid of Cupertino, and these suggestions do not match the available options. This is for IOS 15.1, there are no lines on the bottom right of the screen, they are on the upper right and there is no place to add anything. Please provide instructions for the weather gadget that appears on the Home Screen. Thank you.

I have iOS 15.1 and in the built-in Weather app that is included with that on my iPhone the 3 lines are at the bottom right of the screen and the instructions in my previous reply work. Sorry, but I don't know why yours is different -- the only thing I can think of is the possibility that you installed a different weather app at some time in the past.