The weather in iwatch can't be synchronized.

The weather in iwatch cannot be synchronized. You can restart AppleWatch by following these steps. Press and hold the side button until you see "Shut Down", and then drag the slider. To open the watch again, press and hold the side button. Restart the iPhone and unpair the AppleWatch from the iPhone (when you unpair the AppleWatch from the iPhone, the iPhone will automatically create a backup for the AppleWatch. Unmatching will erase all data in AppleWatch. ) Pairing the AppleWatch with the same iPhone again, you can select "Restore" from "Backup" and then select the backup stored on the iPhone.