How change weather location on iPhone?

How change weather location on iPhone?

Ok dude go to the weather app and on the bottom of the screen next to where it says "Updated… " there will be a little "i" within a circle. Click that and then click on the "+" sign on the upper left hand corner. Type in the city's name. Press done and there you go. If you want to delete the city, press on the red "-" sign and then press delete. If you want to move the cities to change the order, hold where the three bars are and move accordingly. Say you have St. Louis on the bottom, it will show last when you shift your iPhone. If you move it up to the top, it will open up to St. Louis when you go to the app. If you put it as second, it will be the second dot on the bottom of the screen and you will only have to shift once to get there, and so on with the other locations if you have them.

I had my current location until today. When I try to reenter it it does not recognize the location but gives me a location 15 miles away