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If the worm has a wider band, there’s a milder winter coming. If the band on the worm is narrow, it will be a harsh winter. When using wooly bear caterpillars, better known as wooly worms, to predict the weather, tradition says the width of the brown band on the worm is key, according to KSPR. How does the Wooly Worm color predict winter weather? In case you didn’t know, folklore says that thin brown bands on the woolly worms means a harsh winter is coming, wider brown banded woolly worms mean a mild winter, nearly black woolly worms means a severe winter is coming, and finally the very light brown or white woolly worms mean a snowy winter according to the folklore. What does a brown and black wooly worm mean?
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