The station was originally AOR WSYR-FM ("94 Rock") until 1983 when it switched to its current format, where it has enjoyed a long and successful run.
In 2007, the station somewhat tweaked the format, playing more soft rock and pop hits from the 70's, 80's and 90's rather than mostly contemporary music. This was to distance itself from its former sister hot AC station, WWDG (105.1), which was sold off to new owners in 2009. (What is now WOLF-FM currently carries a country music format.)
During the holiday season, from approximately the Friday before Thanksgiving (occasionally, the date of changeover is tied to a contest) through New Years Day, WYYY changes format to all Christmas music.