Lube helps for a while. Screen door hanging seems to cause it too. If its the screen door hanging they are super easy to adjust with a socket, dowl rod, socket extension stuck in between the hinges on the outside of screen door and gently roling the door back. You will have to do it evenly on each hinge, a little at a time till you get it.
There is a lot of room to adjust between the jam and hinge- seen in second pic.
- if that doesn't work, a block of wood against the striker area and a little tappy tap does wonders!!