My crystal ball is at the cleaners right now, I'll try to update my post when I get it back
We travel from Maryland to Florida almost every February. February is the snowiest month in the DC area. Last time we went, it started to snow the night before we left. We towed in 4WD until we hit central Virginia. If you are about to leave and see a storm coming that could cause problems, you can either leave earlier or later to miss the storm.
Common sense goes a long way. Pay attention and prepare for the conditions. Florida is wonderful in the winter. We are looking forward to our trip already. We missed last year because we had a 3 month old boy in February... too long of a trip for him.