I would say probably snow stops me more than anything. Cold I can deal with usually. My commute is short only 3 miles each way but since I moved I have some steep hills to contend with so I'm not sure how that's going to play into things when we get the first snow. All I know is last year the entire east coast was shut down, I REALLY hope it's not another winter like that. I have all the winter gear but for this short of a commute I dunno if I will want to drag it all out for 3 miles. To be honest, I've been trying to come up with a good method of getting to school by running. The whole book issue is a pain in the butt! I have a small locker at school which I've debating on using and leaving my books there on a couple of nights per week. I can comfortably handle 5 miles of running now so I figure 6 should be doable especially broken up into to 3 milers. It's just the logistics are never in my favor.