It is winter now, but even in the summer my hands and feet are constantly frozen is something wrong with them?

Cold intolerance!: There are several possible causes of cold intolerance. You need a physical and appropriate testing to make sure that there is not a treatable cause, like thyroid hormone imbalance, anemia, or iron deficiency or some other problem. If you smoke, stop, it makes this much worse. Caffeine might make it worse, too. See if it does, and if so, stop that as well.