Wooly worm predictions are a folklore methodology of predicting the severity of winter climate primarily based on the coloration of wooly bear caterpillars. In accordance with the custom, a wider black band on the caterpillar signifies a milder winter, whereas a wider brown band suggests a harsher winter.
The origins of wooly worm predictions are unclear, however they’ve been handed down by way of generations in lots of components of North America. Some consider that the caterpillars’ coloration is influenced by the quantity of daylight they obtain through the summer time months. Others consider that the caterpillars’ coloration is solely a matter of genetics.