NOAA’s National Climatic Data Center (NCDC) is near completion of its calculation of the 1981–2010 Normals. Climate Normals are the latest three-decade averages of climatological variables, including temperature and precipitation. This new product will be replacing the current 1971–2000 Normals product. NCDC is still acquiring data for the year 2010. We expect the final input data will be ingested and processed by the end of April 2011. NCDC will be releasing the new Normals in two phases. The most widely used Normals will be released by July 2011, and all other Normals will be made available in a supplemental release by the end of 2011.
For more information check out this link or contact Mark Ewens, Climate Services Focal Point at 701.772.0720 x327 or email Mark at Mark.Ewens@noaa.gov