Winter Newborn Essentials For Your Baby Mama and Peaches As the weather warms up (and cools down and warms up again), dressing your baby for sleep can feel a little less predictable. To make spring nights simpler, we've put together an How to Dress a Baby for Cold Winter Weather Backwoods Mama As the nights get cooler, here's how to keep your baby snug, safe, and just the right kind of cozy this Autumn. 68 72F: Long sleeve onesie + 1.0 1.5 TOG