According to this website Phil, the groundhog with the inside knowledge about meterology, has been making weather predictions since 1887. It also says that 90% of the time he sees his shadow, predicting six more weeks of winter. They did not have any figures to prove how accurate his shadow-viewing method of determining spring actually calculated.
So I'm going to assume that the woodchuck institution has a significant margin of error, including this year's promise of more winter. Ergo, you're wrong, woodchuck!
We need spring showers. And if you think I'm whining now, give me a few months until when the Bradford Pears bloom and people start to mow their lawns -- and my allergies come of age.