March is the ordinary month. The temperatures are higher than February but it's still windy and the trees are still bare. There are no legal holidays normally, except this year Easter is early so that makes Good Friday a holiday, at least in some states. March sort of is the month of continuations. Yes spring technically starts in March, but in reality spring comes in stages, and then there is Saint Patrick's Day, which can be fun but for non Irishmen is no big deal.
One nice thing about March is, if you want to take a chance on the weather, it's a good time to travel. Sure everything isn't open in most tourist areas but the prices are lower, the kids are in school, and you get to see the locals living life as life is really lived, before the streets are cluttered with tourists with cameras. When I worked in a public library I always took my vacations in March partly because that is tax season,
Editor's note: Many states also celebrate Maple syrup weekends in March and Michigan has declared March maple syrup month. Ho hum.