Every February 2 since 1887, Punxsutawney Phil in Pennsylvania has made his weather prediction. If it's sunny and he sees his shadow, it's said we'll see six more weeks of winter. If it's cloudy and he does NOT see his shadow, it's said to mean an early spring.
Okay, this is just a fun event for people in the United States and in Canada. No, I don't really believe it. On the other hand, has anyone ever done a study to see how accurate those Punxsutawney Phils have been over the 136 years? I rather doubt it.