Summer car oil change, once per year, when to do?

Jul 3, 2005
I have a vehicle that is only used in sunshine during the summer. All other times it is covered and garaged. I plan on only doing one oil change per year. When is the best time to do it?

1. Before the vehicle is stored for the winter.
2. Before the vehicle is taken out for the summer.

Is it smarter to have fresh oil in it while it's stored, or put fresh oil in it once it's ready to be driven again? Or is there really no difference? Going to be using 0W-20 Mobil Extended Performance.
I'd rather store it with fresh clean oil. As you can see opinions vary.