when will 100.3 play christmas music

Well, it depends on the radio station and their programming. Some stations start playing Christmas music as early as the beginning of November, while others wait until December 1st. Some stations even have a "Christmas in July" special where they play Christmas music all summer long. But, in general, most stations will start playing Christmas music around the middle of November, right around the time Thanksgiving is over. So, keep listening to your favorite stations and you'll hear the first few strains of "Jingle Bells" before you know it!