As you may know weather information can be shown in Notification Center after unlocking the screen . If you didn’t jailbreak your phone , it is nearly impossible to show weather in lock screen . But now , an app named Lock Screen Weather did the trick and successfully passed through iPhone App Approval process .

How they work it out ? Here is the way :

The app plays a silent song using built-in iPod app, with the album cover generated dynamically by the app . Therefore , through changing song in a certain time interval , the weather will be updated in lock screen . Smart !

However , the disadvantage is that when this app is activated , you cannot listen to other songs ( of course , the iPod app is occupied by this app ) . Also , your battery will burn faster than usual , as you are playing songs non-stop .

APP INFORMATION
App Name : Lock Screen Weather
Price : US$0.99
Availability : App Store (world-wide)
Release Date : 21 Dec 2011
iOS : 5.0+