Weather Display on Lock screen

[kunal kulkarni]

Dear Apple programmers,
I have an iPhone 5 and wish to view current weather temperature from my lock screen. (No, I dont want to unlock my screen and navigate to weather app!)
when you simply press the home button, the backlit gets on and you can see the time. I want to customize this to display the current temperature! There are few apps available on the App store. However, they dont perform the desired function.
Any idea on how this could be done?

Thanks,
KK