Going Camping-What to wear?

well i go camping every year to mohican state park-i live in Ohio-in loudinville,ohio and we stay in cabins they have heat but no one ever uses it....you usually are supposed to over pack.....(i always do) soo i need help we have a fire every night and we are always outside.....well should i bring like sweatshirts and stuff for nighttime??????? its usually like 75*F.....soo its always warm unless it rains? u dont really hafta answer if u dont wanna :))