Train travel in the eastern US is a more viable option than in other parts of the country. Whether it's cheaper or shorter than air travel depends upon a number of variables and can be researched on a case-by-case basis. However, when booking weeks ahead of time in winter months, the weather is a factor that can affect travel plans. Is one option better than the other when considering the potential for snow? Certainly air travel is often delayed due to snow/ice on the runways; are there any analogous issues with trains?
My initial thought was that perhaps trains can mostly plow through the snow (literally), but that's just a very uneducated guess as I know very little about train travel. I'm specifically thinking about travel between the Philadelphia area and Boston area, but I want the question to apply more broadly.