It's normal. I'm cold during all my fasts. I used to take hot showers and just bundle up. Your body is not digesting so your internal oven is "turned off" for lack of a better analogy.
I always juiced in the morning and brought everything with me in a cooler. I once camped for four days and just brought a four day supply with me. Granted, the juice wasn't as fabulous on day four but it worked just fine. Carrot and apple keep very well.