Cold bus rides

I've been taking the bus to school almost every day. If it is cooler outside the buses are quite comfortable, but if it is a hot day, the buses are cold from the air conditioning. I could use a jacket, in fact quite a few people do wear jackets on the buses on those days. Stores, too, are kept colder than they need to be for comfort. Is it just me, or is there something wrong with our expectations?