My ex-husband's grandmother, a very dear lady, lived in Punxsutawney across the street from where Phil checks his shadow every year. It was interesting to watch it become a bigger deal year after year.
As for Phil not being a meteorologist, I trust him more than them. I lived in the country next to an old man who taught my son earth signs for predicting weather. I never knew them to be inaccurate, but I remember watching the TV weather report one night where the meteorologist was saying 40% chance of precip when the rain was coming down like billy be damned outside his studio.