We just have clocks with thermometers in them and both used to have a couple of degrees difference. We now have the smaller of the two in E's room and it says 23.9 right now, though it doesn't feel that hot. We just have a fan in the room (not pointed at her) and have her in just her long babygro and she seems fine. If she gets hot, I will have to put her in a short sleeve one. Just don't want to as no matter how short her nails are she will scratch her face and legs in her sleep.