The iPhone contains a built-in weather application allowing you to see weather conditions and forecasts on the go. When launching the iPhone weather application for the first time, the default location shown is Cupertino, the home of iPhone manufacturer Apple. Add your city to the iPhone weather application to set the location on your iPhone and begin viewing the weather for your own area.
Tap the weather application on the home screen of your iPhone.
Tap the italic lowercase "i" in the bottom right corner of the screen to bring up the settings page for the application.
Tap the circular red icon with a white line on the left of "Cupertino" to delete the city if desired, then tap the "Delete" button. This step is optional.
Press the "+" icon in the upper left corner of the window to begin adding a city. Enter the city you want the application to display the weather for, then tap "Search." The city name appears below the Search box. Tap it to have the weather application display the weather for that city. Repeat this process until each city you want to monitor is added.
Tap the right side of the icon for a city and drag it up or down to change that city's position on the list. The top city is the first shown when the weather application is open.
Tap "Done" to save your changes.