Fir trees in the mountains are covered with frost and stand in a hazeFir trees in the mountains are covered with frost and stand in a haze
Light frost on the edge of the forest near the houseLight frost on the edge of the forest near the house
Nature has gone into hibernation. frosts have comeNature has gone into hibernation. Frosts have come
Сильный холод (с температурой воздуха ниже нуля). Холодная погода (с температурой воздуха ниже нуля).