Its forecast has 2 percent fewer heating degree days (warmer) this winter than the 1980 - 2010 average. (truebluenaturalgas.org)
You can use these calculations, in combination with the number of «heating degree days» and «cooling degree days» at your site, to accurately estimate your energy bills. (money.stackexchange.com)
The number of heating degree days from October through February was down 11 % compared to the 30 - year average. (eia.gov)