That's not inconsistent with JW teaching, since they believe that Jehovah really doesn't know the future fully. He didn't know, for example, that Adam would sin, or who will be ultimately saved. According to WT teaching, Jehovah chooses not to know certain things about the future so as to allow free will in his creatures. Such a deity is timebound, and not all-knowing and eternal as the God of Christianity is.
Further, they believe that Jehovah doesn't even fully know the present, since they take his words to Abraham in Genesis 22:12 ("He said, "Do not lay your hand on the boy or do anything to him, for now I know that you fear God, seeing you have not withheld your son, your only son, from me.") to mean that Jehovah really didn't know before that what was in Abraham's heart. Most commentators understand this expression as an anthropomorphism, not an indication of a lack of knowledge on God's part. But the WT's Jehovah is not quite on the same level.
I remember Dr. Ron Nash speaking at a conference once about open theists, who believe, as the WTS teaches, that God does not know the future fully. His remark, which I thought was pretty witty, was , "If I had a God like that, I'd want to pray for him."