It isn't really a "tiny town in Western Pennsylvania." It's Woodstock, IL.
In 1992, Woodstock became the temporary home for the filming of most scenes of the now-classic comedy movie, "Groundhog Day." Woodstock is a far northwest suburb of Chicago, about 10 miles from Wisconsin.
Illinois native Bill Murray, Andie McDowell, Chris Elliott, director/writer (and Illinois native) Harold Ramis and the rest of the cast and crew came to Woodstock to film a comedy about a news reporter who goes to Punxsutawney, Pa., to cover the annual Groundhog Day festivities, where a group of local officials drag poor groundhog Punxsutawney Phil out of his hibernation. If the critter sees his shadow, it supposedly means six more weeks of winter. Weather keeps the reporter and his crew overnight, but he begins waking up to the same day every day.
Woodstock has capitalized on the notoriety with a weeklong festival, including walking tours of the iconic sites in the movie. The film also brought greater attention and tourism to Punxsutawney itself. Bill Murray and Harold Ramis have both served as honorary grand marshal for the Groundhog Day celebrations in Punxsutawney.
"Groundhog Day" is ranked #8 on the American Film Institute's list of the 10 greatest films in the genre "Fantasy."