In reply to Tim Chappell:
Possible
> "Trek"? "Hike"? "Climb"? In January?
> It's certainly possible to *ski* Mont Blanc in January. But walk up it? Almost certainly not.
Possible, sure. Advisable, absolutely not.
None of the locals get anywhere near Mont Blanc on ski before late April at the earliest (usually more like mid-May). And only a fool would try to walk up there in winter. Deep snow, crazy avalanche risk, very low temps.
My girlfriend works at Snell and sees people like you (OP) a couple of times every week of the winter. They come in various states of unpreparedness, usually don't even own crampons or touring skis, and sometimes haven't even checked the weather forecast. She manages to talk most out of it, but some actually try. They usually turn around very quickly when they realize what it really entails. And then, a few die every year, stupidly.