Snow riding is a no go for me with my current tires and cycling clothes. Knobbier tires will be on the way once one or both of my current ones are worn or damaged. My limited amount of winter cycling clothes are only good enough down to about 28-30+ degrees with low wind. Wearing a winter coat and jeans on the trail doesn't sound like a lot of fun. Also don't think I want to try clipless pedals in snow. Ought to get me some flat pedals, but I don't know how well clumsy boots or maybe tennis shoes are going to work.
I'm going to make do with snow hiking for now.