This is the guide to port LG weather widget found in optimus black to all roms like cm7
*A nice working rooted mobile phone
*A working PC with java installed
*apktool-[Simple guide by PulseDroid]
Note :This Guide is only for android 2.3 because many people having errors on android 4.0+. Sorry I have no workthrough . Try this widget . It's the widget from LG UI 3.0.
*Extract framework.jar from /system/framework/ through any root file manager.
*Decompile it through apktool, a newly created framework.jar.out will be there.
apktool d framework.jar
*Copy "lge" from com folder of LG smali and paste it in framework.jar.out/smali/com ( in apktool folder )
It must be like this "framework.jar.out/smali/com/lge"
apktool b framework.jar.out
*Reboot your phone.Don't worry it will take time to reboot.
*Lastly Download the widget from here and install as regular app