We now offer live weather model based heating and cooling degree data as the weather models are released throughout the day. We believe our method of calculating HDD & CDD’s is superior and very scientific based, resulting in very accurate HDD & CDD statistics. There are three primary packages, but believe you will find the Premium and Exclusive most beneficial as they include the important European model which the nat gas markets follow closely in addition to the GFS. The Climate Forecast System (CFS) is a climate model that we provide live HDD & CDD statistics out to 45 days, ideal for longer term demand predictions. We also provide customized statistics for anywhere in the country or world.