A calf's optimal comfort zone is an ambient temperature of 15°C. If the calf is not sufficiently dry, the calf will get cold and will burn more energy to keep warm.
This is not only at the expense of vitality, but also at the expense of growth and increases the risk of stress and respiratory diseases.
Learn the difference in animal behavior between a moment of joy, ("going bucking through the field"), and nervous/anxious and irritated animals.
It will absolutely help you in your daily work when handling your (farm) animals.