Jack Frost

Jack Frost is a personification of frost, ice, snow, sleet, winter, and freezing cold. He is a variant of Old Man Winter who is held responsible for frosty weather, nipping the fingers and toes in such weather, coloring the foliage in autumn, and leaving fern-like patterns on cold windows in winter. Starting in late 19th century literature, more developed characterizations of Jack Frost depict him as a sprite-like character, sometimes appearing as a sinister mischief-maker or as a hero. Background Jack Frost is traditionally said to leave the frosty, fern-like patterns on windows on cold winter mornings (window frost or fern frost) and nipping the extremities in cold weather. Over time, window frost has become far less prevalent in the modern world due to the advance of double-glazing, but Jack Frost remains a well-known figure in popular culture. He is sometimes described or depicted with paint brush and bucket coloring the autumnal foliage red, yellow, brown, and orange.