The tradition of a groundhog predicting the weather has spanned centuries. Here is what you need to know about Punxsutawney Phil and Groundhog Day.

Punxsutawney Phil usually makes his weather call early in the morning. It typically happens after 7 a.m. Tradition says Phil seeing his shadow is a sign that the next six weeks will bring wintry weather. If Phil doesn't see his shadow, it means an early spring.

Feb. 2 is Groundhog Day! Did you know there is a special “groundhog punch” that keeps Punxsutawney Phil alive? This lets him see his shadow (or not).