KLTI-FM (104.1) in Des Moines is a Christmas music station this year. KDAT-FM (104.5) and KCVM (93.5, formerly 96.1) are still “holiday” music.
What hasn’t been dialed down, though, is the start date. I had heard all three versions of “Sleigh Ride” before Dec. 1, just flipping occasionally past those stations.