In the last 130 years of DJIA history, there have been 47 years with negative returns. During the same period, the month of January has been negative 45 times. 29 out of the 45 coincide with years with negative returns. Meaning that there's a better than 60% chance that if January 2016 ends in the minus column, the year will end with a loss as well.
The average monthly loss for January is 1.75%
The average yearly loss for the DJIA is 13.7% which translates into a downside target of about 15000:
It is interesting to note that Jan 7th is the projected CIT date according to the Calendar on the left.