Groundhog Day

From HFUnderground

Celebrated every February 2.

In weather lore, if a groundhog, also known as a woodchuck, or marmot emerges from its burrow on this day and fails to see its shadow because the weather is cloudy, winter will soon end. If on the other hand, it is sunny and the groundhog sees its shadow, the groundhog will supposedly retreat into its burrow, and winter will continue for 6 more weeks.