These graphics are from the cpc and noaa. As you can see a transition to a moderate la-nina is likely in the coming months. Some analog years for a winter match up well with a transition from el-nino to la-nina, 95-96, 98-99, 88-89 and 07-08. 95-96 was cold with lots of snow compared to normal while 98-99 had little snow and was very mild. A common occurrence is for a cold December in la-nina years a look at the cfs climate model above does show that potential.
The forecast for this weekend is below in the comments section or can be found @ http://people.wku.edu/leeperd/