I know down here in texas it depends on the area you hunt in. Where I hunt vegetation is limited and deer come to the corn every day no matter what the temperature is. However, some times they limit there activity until after dark.................Then again it may just have to do with the amount of pressure in your area and some times when you frequently visit a stand you can push the deer away or even make them go nocturnal I think if it is possible maybe hunt another location or just give your area a break.........not sure if this helps but just thought I would pass these ideas along