A measurement of comfort determining heating or cooling requirements within business or home is based on the average temperature for the day compared to 65 degrees. A maximum temperature of 40 and low temperature of 32 for the day equals an average of 36 and when compared to 65 equals 29 heating degree days. This calculation is done for cities and towns, regions and nationally also considering the population and forecast by meteorologists to determine heating/cooling needs for energy companies.
The gas home heating population weight heating degree day forecast for regions of the eastern U.S. for next week will drive peak energy demand from Chicago to Boston and possibly as far south as Atlanta with historic departures from normal. The extreme cold ends week after next although the very cold pattern is likely to continue. Gradually an easing toward normal is forecast for 3 and 4 weeks from now albeit with low confidence.