It was cold here (-2C with windchill) So even though it was 30ish, I still didn't find it that bad out. I had on boots, tights, thick leggings and only one warm long sleeve shirt under my warm jacket, and gloves and earmuffs. And I was not cold at all.
My niece had on tights and pants and outdoor pants (i forget the name of them, they are thinner than snowpants. She had on a hat and gloves and her jacket. And her costume over it.
I felt bad for the kids wearing their snowsuits under their costumes.