It's not the Winter that slows me down. I had a very pleasant 45F walk of 5 miles this morning.
I think you mean that it's the snow that causes problems.
We can get some pretty amazing Spring snowfalls that cause the same problems.
I'll hunker with my co-worker who lives within very short walking distance until conditions are clear enough to walk the 50 miles home. (or she'll give me a bicycle and I'll get home in a day)
Mostly I'm just super-sensitized to weather and the forecasts so that I bail out and go home when bad things threaten.