States and Cities
New Degree Days Products
Daily, weekly, and monthly degree days products for the Contiguous United States are now available. These data include population weighted State, Census Divisional and National data using 2010 Census data (excluding Alaska and Hawaii), and heating fuel weighted Census Divisional and National data using the 2010 Annual Community Survey data. Degree days statistics are computed using the 1981-2010 normals.
Degree days statistics in the legacy format are available here: Legacy Files
Daily degree days data in a spreadsheet friendly format are available here: Daily Degree Days
Development continues with these products, and more information and data will be available soon.
The original products available through the links below have not been changed at all, and still use the 2000 Census population and fuel customer numbers, and the 1971-2000 normals
To subscribe to a list serve for the degree day and palmer data click here:
Note: Degree Days Outlooks are now accessible via the "Outlook Maps and Graphs"
option. Choose "Special
CURRENT SITUATION: Degree Day summaries for the week ending November 14 and forecasts for the week ending November 21 are now available on
the Web site.
The degree days computed in real-time during August 20 to October 31 (2009)
were erroneous due to corrupted temperature grids. The data was re-run and the correct values are now in the archives.
The degree days computed in real-time during Jan 12 to April 26 (2008) were
erroneous due to corrupted temperature grids. The data was re-run and the correct values are now in the archives.
The daily station normals from the
National Climatic Data Center (NCDC) were corrected on June 28, 2003. The archives were reconstructed for heating degree days back to July 2002 and for cooling degree days back to January 2003.
Note: The archives have been corrected (on June 28, 2003) for Heating Degree Days
back to July 2002 and for Cooling Degree Days back to January 2003.
- 1997-current (Note: this data
is preliminary. For final and verified monthly data, contact the National Climatic Data Center. For additional information about this archive
contact Adam Allgood at: Adam.Allgood@noaa.gov