Has anyone ever seen a wild monkey in Washington State?

I was hiking on a trail today and was about 3 miles in. The trail isn't very popular and is no where near any houses or city, I have to drive about 25 miles to get to the trail head. So I see this thing kinda swing from a tree out of the corner of my eye. I get my camera/iphone out and take a pic and about a second later it swung away and I didn't see where it went. It was white with a black face. I'm kinda pissed at the crap quality of the pic but hopefully people can make it out. It couldn't have been that big but I'm guessing it may have been 2 1/2 to 3 feet high.