cold — Something that is cold has a very low temperature or a lower temperature than is normal or acceptable.
nippy — chilly or cold: morning air that feels a bit nippy.
chilly — Something that is chilly is unpleasantly cold.
frigid — very cold in temperature: a frigid climate.
frosty — characterized by or producing frost; freezing; very cold: frosty weather.
refreshing — having the power to restore freshness, vitality, energy, etc.: a refreshing nap.
arctic — The Arctic is the area of the world around the North Pole. It is extremely cold and there is very little light in winter and very little darkness in summer.