OK, I asked everybody else for their answer. Here is my answer.
First, I won't include God. (I have no need for that hypothesis.) I will word it a little differently: If the current state of matter and energy around me were known exactly, would it be theoretically possible to conclude what I would do, with me unable to do otherwise? Immediately we run into the problem that Heisenberg's uncertainty principle makes it impossible to know the exact state of things. Say the current state was known as well as theoretically possible. Would my future actions then be predetermined?
I tend to think not. The cumulative quantum affects would allow me to make different decisions. An exact duplicate of me in two universes might make one decision in one universe, and a different decision in another.
Or maybe not. Maybe "exact" duplicates of me would always make the same decision. In that case, I--that is, the matter and energy that I consist of--am not free to do what "I" choose.
So it may or may not be that the current state of matter and energy has predetermined everything I do from now on.
So I see it is one way or the other. Either the entire state of the universe predetermines my actions (in which case I had no freedom to choose otherwise) or the universe leaves it to chance quantum effects. I see it is one of the other. I cannot buy the convoluted arguments I see here that claim that somehow it it all cast in stone, but yet I still have a choice.