Deer will absoleutely move with this cold weather. They need to stay warm also which means they must get up and move around often. I will have to disagree with the 1st reply about not hunting food plots in the morning. I'm pretty sure that where you are the rut is either in full swing or fixing to get started. If it is you need to hunt the does, where they are the bucks will be. I would have no preblem hunting that field in the morning but I would try to enter my stand where the field will be least disturbed. Also if the wind is wrong I would even think about approaching it in the morning.