Is it really possible to forecast the future?
Whether it is possible or not, the Bible specifically addresses this type of thing. Psychics, soothsayers, fortune-tellers and the like are described as evil and against the kingdom of God. That is enough to keep me away. But, some people's curiosity gets the best of them and they just have to know if these things are real or not.
Most of the time, astrologers, psychic advisors, and fortune-tellers only use parlor tricks that seldom prove to be real in the end. But, the few that are real are so evil and in direct opposition to God that we are to avoid even the ones that are "just for fun." The kind of evil that you could be opening your life up to by dabbling in these matters-the occult-makes it just not worth it. Throughout the Bible we are told to be on guard "against the spiritual forces of evil in the heavenly realms"
Only God really knows the future and only He has your best interests at heart. Seek Him if you are worried about the future. Place your future in His hands.