CDO

Hi
I am trying to use the CDO to calculate daily accumulated rainfall from daily data between 2 Jan to 1 Feb through 1995-2013 (attached file). For example for the year 1995, I need to get time serie of rainfall which is including day2jan, day1jan+day2jan, …..,day1jan+...+day1feb and it would be doing for all years in my file). I am not sure if it will be possible to use CDO or not. If it is possible, which operator is suitable for me.
Best Regards