NOAA/ESRL/PSD Catalog http://esrl.noaa.gov/psd/thredds/catalog/Datasets/cpc_us_precip/RT/catalog.html

Dataset Size Last Modified
     Folder  RT   --
         precip.V1.0.2007.nc 26.28 Mbytes 2012-09-04T19:29:29Z
         precip.V1.0.2008.nc 26.35 Mbytes 2012-09-04T19:29:26Z
         precip.V1.0.2009.nc 26.28 Mbytes 2012-09-04T19:29:23Z
         precip.V1.0.2010.nc 26.28 Mbytes 2012-09-04T19:29:21Z
         precip.V1.0.2011.nc 26.38 Mbytes 2012-09-04T19:29:18Z
         precip.V1.0.2012.nc 26.35 Mbytes 2013-01-07T18:04:35Z
         precip.V1.0.2013.nc 9.796 Mbytes 2013-05-18T09:16:22Z

NOAA/ESRL/PSD at NOAA ESRL PSD see Info
THREDDS Data Server [Version 4.3.15 - 20121218.1126] Documentation