I received the following data from the National Weather Service Forecast Office in Albany. The data was collected from the Dutchess County Airport near Poughkeepsie (41° 37' 28" N, 073° 52' 58" W) here in the mid-Hudson Valley.
A listing of rainfall, and departures from normal, for each month in 2011 to date:
The National Weather Service (NWS) uses a 30-year average for "normal" climate values of temperature, rainfall, etc. They also compute them in 10-year intervals such that the last yearly report, for 2010, compared the year to an average of values from 1971-2000. When the NWS prepares the yearly report for 2011, however, it will use an average of values from 1981-2010.
Anyway, how does this year stack up to what a "normal" amount of rainfall is in the Hudson Valley? Well, according to the 1981-2010 data, "normal" rainfall for the year is 46.53 inches. We've already exceeded that by 1 inch and we're only 3/4 of the way through the year!
On August 28-29, courtesy of Hurricane Irene, we had a record 24-hour rainfall total of 7.07 inches!