You cannot predict future. But common.... Do you agree that we are having possibly lowest interest rates in the history? Yes, it may go down a bit lower: 2.73% to ??? for 30 year fixed rate?!?
Checking the last 50 years, this can be as good as it gets. If you are able to refinance: still have a job, a decent credit score, etc., etc., talk to loan officers. You will save money. Pure and simple. If you are able to buy home, get serious. You will be shocked how much buying power you lose when rates move up one point.