I have 3 graphs for you. They are HADCET Mean, Min and Max. The Min and Max HADCET data is only available from 1878 on.
October 2013 is tied for 10th warmest using the Mean data, 11th warmest using the Max data, and 5th warmest using the Min data.
For the Max data, 1921,1959,1969,1995,2001,2006,2011,2005,1945 and 1978 Octobers were warmer than October 2013.
Amazingly, October 1921 was 1.7C warmer than 2013 using Max data. Click on graphs to make bigger.