1. First open the settings menu of your phone. This will usually be found as a gear-shaped icon on the home screen or in the app list.

2. Secondly, in the settings menu, find the "Sound" or "Sound and Vibration" option and click to enter.

3. In the sound setting options, browse to find the relevant ringtone or notification sound settings.

4. Click Ringtone or Notification Sound Settings to enter the ringtone list or settings page.

5. Browse the ringtone list, find and select the audio file you want to set as a ringtone.

6. The final weather forecast information has been automatically downloaded to the ringtone list. Find the ringtone in the list and choose to delete or clear it. Different phones offer different options for deleting ringtones.