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.

Gobbler's Knob in Punxsutawney, Pennsylvania, as the world's most famous groundhog, Punxsutawney Phil, will emerge for his annual prognostication. Over 40,000 people are expected for this year's festivities.

Groundhogs emerge from their burrows on Sunday to tell us if we can expect an early spring. Will they see their shadows? Here's what to know.