What does an all black Wooly worm mean?
Matthew Cannon
Updated on January 08, 2026
According to weather folklore, the more black on a woolly worm in the fall means a longer, colder, and possibly snowier winter, to come. If there is more brown, especially in the middle of the worm, that's a sign of a mild winter.
What does it mean when the caterpillar is all black?
So, if you spot an entirely black caterpillar, it isn't forecasting an apocalyptic winter!) According to legend: The wider the rusty brown sections (or the more brown segments there are), the milder the coming winter will be. The more black there is, the more severe the winter.What does it mean when you see a black wooly caterpillar?
According to folklore, the amount of black on the woolly bear in autumn varies proportionately with the severity of the coming winter in the locality where the caterpillar is found. The longer the woolly bear's black bands, the longer, colder, snowier, and more severe the winter will be.What did wooly worms predict for 2021?
No, the woolly bear caterpillar can't predict the upcoming winter, but it does indicate the harshness of the last one. The folklore suggests the wider the bug's brown ring, the milder the upcoming winter will be.What do woolly bear caterpillars predict for 2021?
2021-2022 Woolly Bear Winter PredictionThere are 4 dark stripes on the front end of the caterpillar and 3 on the rear. So, compared to the 5/5.5/2.5 ratio from last year, the beginner and middle of winter should not be as bad this year.