Never calved in January before. At what point, temperature wise, do you begin to worry about a 4 to 5 day old calf surviving cold temps? I put a calf coat on her and shes out of the wind with momma. Plenty of bedding. She has been nursing well. It was zero this morning and she seemed fine. So far so good. Forecast tonight is for 10-15 below. Winds 10-25mph. Above zero tomorrow and for the next week. Should I bring her in the garage or leave her with momma? Makes me really nervous with this cold snap.