But isn't it March?

So said Bryn today when I picked her up from school. She was wearing a short-sleeved shirt, a skirt and crocs, and she didn't have a coat. "I thought March meant it was springtime, and I could wear short sleeves?" Yeah, don't let the 48 degree days of last week fool you into thinking spring has sprung. Didn't you listen to the groundhog?