Snow in Spring?

No joke, yesterday we got around 5 or 6 inches of snow! It started around 4 AM Saturday morning and didn't stop til 6 or 7 PM. It was ginormous flakes and there was thunder. Which I thought was weird cus usually thunder is associated with rain? Anyway, here's a picture of how much there was in my front yard:

And the funniest part? It's all completely melted now. It was like, 60 degrees all day so now it's all a wet, muddy mess.