In addition to the previous post, I wanted to show you what the European weather agency's model is indicating for Christmas eve.
It looks like the ECMWF is taking on the same tendency of the GFS. It is taking a warmer track. Actually, the track takes a hard turn to the north and plants the low up over Kansas City. This would keep most Missouri as rain for the 24th. It would also keep most of Illinois as rain on the front side of the storm.