A record 1.82 inches of rainfall accumulated at the Luis Muñoz Marin International Airport in San Juan on the 29th of October 2010. This record surpassed the 1.19 inches of rainfall that accumulated on the same date in 1961. With this additional rainfall, a total of 73.64 inches of rain has now fallen in San Juan since January 1st, 2010.
With just over 2 months remaining in 2010, this year already marks the 4th wettest year on record at the airport, just 3.64 inches behind the record 77.28 inches that fell in 2005. With the wettest month of the year just ahead (November has an average precipitation of 6.17 inches in San Juan), it remains possible that 2010 just might end up as the wettest year on record at the airport.
This unusually wet weather has not been limited to San Juan. At the Cyril E. King Airport on Saint Thomas, 2010 also remains on pace to become the wettest year on record since record keeping began. Plots of accumulative precipitation since the first of the year in comparison to the two wettest years on record for each location can be found in the table below.
*Records for San Juan date back to January 1st, 1956 and to January 1st, 1953 for Saint Thomas