The city agency responsible for literally weathering the storm, the mayor's Office of Emergency Management, just sent out a note. According to their figures, Hurricane/Tropical Storm Irene cost the city at least $55 million:
Based on preliminary information we have gathered from City agencies, we estimate that the costs of the response, recovery and damage to public infrastructure are at least $55 million. I emphasize that $55 million is a preliminary figure based only on the information we have been able to collect so far. Many City agencies continue to collect cost information and we expect agencies will report additional costs.