You mention that he's howling "out there." Do you keep him outside all night? Many dogs howl from simple loneliness at night if they're kept outside. Trying bringing him inside. He might be tired from howling all night, so he sleeps during the day (dogs sleep 18 - 20 out of every 24 hours anyway).
If you're concerned about your dog raiding the kitchen at night or leaving a mess on the carpet, train him to sleep in a crate in your bedroom. I've done this for all my dogs and even when I later leave the door open, they usually opt to nap or sleep in their crates. Give him treats and a toy when you put him in his crate. Use a toy that he likes, but only give it to him at bedtime, and pick it up in the morning. It's helpful to give him something he can "work on" like a marrow bone, which you can get at your butcher. Also, place a t-shirt that you've worn but ot laundered inside the bed with him. Some dogs who cry at night respond to a blanket or towel placed over the crate for the first week or so. This prevents them to focusing on something that they're crying for, such as you, or the door. Others like to be able to see their people from their crate. See what works for your dog, but don't leave him outside when his whole family is inside. Dogs are social, and they enjoy the security of sleeping with the family in the den.
