NOAA CPC puts out seasonal outlooks for temperature and precipitation each month.  Keep in mind the color shading refers to probabilities (% chance of above or below average).  You can see the current set here:

http://www.cpc.ncep.noaa.gov/products/predictions/90day/

And here is the current outlook for December-February:

http://www.cpc.ncep.noaa.gov/products/predictions/long_range/seasonal.p…