Back in the back woods section of my back woods, there are rumors of some sort of mountain ape/gorilla. I find it hard to believe in the colder northern climate of this half of the state. Being that primates only exist, if at all, in a natural state in southern Mexico then it's pretty obvious there isn't anything like that in any size or shape way up north.
From what I could find, the primates in Japan are basically an anomaly as far as northern primates currently in existence.
I talked to a former Lake Tahoe ranger who said it's not likely but new species of all sorts are discovered all the time. If in fact we do have a primate, they are going to be smart and avoid humans. He even thinks they will bury or obscure their own dead so that and their small numbers can make them possibly exist so long without detection. When I mentioned about the small primates found in Florida, he correctly concluded that it was probably a pet which it turned out to be.
Whether it's bigfoot, medium foot, or tiny tiny foot, a primate in North America right now would be the scientific find of the century. Only millions of years ago, the fossil record shows a primate but nothing since then. It's probably something hunters and locals like to say about having seen a wild primate at least once among the tall redwoods.