The groundhog  has been considered a weather prophet  for many years in north America. According to legend, all winter long the furry brown groundhog sleeps in his comfortable underground home, or hole. On February 2, he wakes up. The groundhog is very hungry and comes out to search for food. If the sun is shinning, the groundhog will see his own shadow. The sight of his shadow gives him such a fright that he quickly returns to his hole. This event means that spring will not come for six more weeks. If the sun is not shining, there will be no shadow. The groundhog will not be scared and he will stay outside his hole. Spring will come very soon. The idea that animals could foretell the weather probably began in ancient Europe. At the time, most of the people were farmers and the weather was very important to them. If spring came early they could begin the planting season early and have an early harvest. They found some animals were good weather prophets. On February 2, when they celebrated Candlemas Day, a religious holiday around the time winter ends, all the people watched for an animal leaving its hole. In Germany, farmers watched for a badge. In England farmers looked for a hedgehog . They believed the animals could foretell the weather for the next six weeks. When the early settlers came to North America there no badgers or hedgehogs near their homes. The farmers did not know when to plant their crops. In time they discovered an animal that left its hole at the end of winter. That animal was the groundhog, also called a woodchuck or a marmot. Every February 2 they watched for a groundhog. Finally, the day came to be called "Groundhog Day". Many groundhog-watching clubs were formed. The members sometimes dressed in nightshirts and top hats made of silk. They would go to the hills in the dark morning and wait near a groundhog hole. Sometimes the groundhog-watching clubs would have other types of celebrations Why did ancient Europeans watch for animals on Candlemas Day?
To amuse themselves. To protect their harvest. To say goodbye to winter. To know when to plant crops.